chapter 5-exam window scanning functions€¦ · ai:-tme p1oro • oil 10454

Chapter 5-Exam Window Scanning Functions

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This chapte r expla ins the scanning functions of the Oasis MRI System. The

chapter primarily describes the Exam window, in which scans are planned and

performed. The chapter a lso inc ludes explanations of the following additional

windows that are used during scanning:

• Scan Remaining T ime window (figure 5-88), whe re you can check the

progress of scans.

• WaveForm window (figure 5-95), which is used during gating procedures.

• StopWatch window (figure 5- 1 03), wh ich a llows you to time tasks and use an

alarm.

• P a tient Table Information window (figure 5-1 12), which displays the status

and position of the patient table .

5. 1

0AS Is~ MRI System Reference Manual ThehUent....,...

Exam Window

5-2

The Exam window is the most frequently used window in the Oasis MRI

System. In this window you can plan, perform, and complete the scan and

post-processing tasks that constitute a patient examination. Figure 5-1 shows a

typical Exam window.

Figure 5-1. Typical Exam window.

Accessing the Window

This section describes the procedures for accessing the Exam window in a

"scan-ready" state (ready to plan and perform tasks).

Unregistered Patients

For patients who have not yet been registered in the system, follow these steps:

t 1. Click the Patient Registration button from the Launcher toolbar.

2. Enter infonnation in the Patient Registration window or access patient

information from Modality Worklist and select the appropriate protocol.

3. Click the Open Exam Window button at the bottom ofthe Patient Registration window. The Exam window opens with the appropriate

information loaded, ready for the examination to begin.

Copyright© 2012 by Hitachi Medical Systems America, Inc. All rights reserved.

Note: Iii Refer to Chapter 4, •Patient Information Functions' for detailed information about the Patient Registration and Patient Directory windows.

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Exam Window Scanning Functions 0 Registered Patients

For patients a lready registered in the system, fo llow these steps:

I. C lick the Patient Directory button from the Launcher toolbar.

2. Right-click the desired record in the Patient Directory wi ndow data list and

c lick Start Examination from the menu that appears. The Exam window

opens with the appropriate information loaded, ready for the examination to

begin.

5·3

0AS Is~ MRI System Reference Manual 11141 htlet~t olllqHt

Definition: A viewport is an area of the window in which you can view images or set up and plan tasks.

5-4

Displaying Exam Window Areas

The Exam window, as shown in figure 5-2, includes the following areas:

Input Series (Source box)-Area bounded by the green highlight in figure 5-2.

Lists the series that are displayed in the viewpo1ts.

Patient & Study-Area bounded by the yellow highlight in figure 5-2.

Displays information about the patient and study. This area is hidden when the

Exam window is in its default state.

P rotocol P roperties-Area bounded by the red highlight in figure 5-2. Lists the

protocol and tasks that will be pe1formed.

Series-Area bounded by the blue highlight in figure 5-2. Lists the series

resulting from the performance of tasks.

Task View Area-Area bounded by the magenta highlight in figure 5-2.

Contains viewpo1ts in which scans are planned and/or images are displayed.

Acquisition Plan -Area bounded by the cyan highlight in figure 5-2. Lists scan

jobs or groups of scan jobs.

Scan Parameters-Area bounded by the orange highlight in figure 5-2. Lists

various parameters that can be set for scanning.

Figure 5-2. Exam window areas.

Copyright@ 2012 by Hitachi Medical Systems America, Inc. All rights reserved.

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Exam Window Scanning Functions 0 Right-clicking in many of these areas produces a context menu. The menu

commands will vary based on the specific window area in which you are

working. The commands that you are most likely to need for a patticular area

will be included on the menu.

The Exam window areas are described in the following sections.

Input Series Area (Source Box)

Input images are the images used as the source when performing or reviewing a

task. You will use the Input Series area, as shown in figure 5-3, to load images

into the viewports. These images are used when setting up tasks in the Exam

window.

Figure 5·3. Input Series area (Source box).

The Source box I ists the series names of the input images.

The procedures for loading images into the Source box are described in the

following sections.

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0AS Is~ MRI System Reference Manual T'MhtJent MqHt

5-6

Loading Series From the Series Area

To load series into the Source box from the Series area, use one of the fo llowing

three methods:

• Drag the desired series from the Series area to the Source box.

To select multiple ser·ies. all adjacent to each other:

Click the first desired series, hold down the SHI FT key, then click the last

desired series. The first, last, and all series in between are selected and ready

to be dragged to the Source box.

To select multiple series. but not adjacent to each other:

Hold down the CTRL key, then c lick each desired series. Each clicked series

is selected and ready to be dragged to the Source box.

• Drag the desired series fi·om the Series area into the appropriate viewport.

• Double-click the desired series in the Series area.

The loaded series names are listed in the Source box. The images in the series

are loaded into the viewports, as shown in figure 5-4.

Figure 5-4. Series images loaded into viewports.


Series Selector v-

Exam Window Scanning Functions 0 Loading Series From the Series Selector Window

To load series into the Source box from the Series Selector window, proceed as

follows:

I. Click the Load button next to the Source box, as shown in figure 5-3. The

Series Selector window opens, as shown in figure 5-5.

The place ot data Test Case 112 CTP Sraon 11/0112011 09.30.03 ... !ll , OK II Cancel

Sll ~ Senes Name 1 Scanogram SCA 2 Sc anogram SCA 3 Scanogram SCA 4 A>aaiSh1m 5 A>aa! Shim 6 851· Sag Tl FSE 7 852· Axlal T2 FSE 8 853- Ax1al FLAIR 9 854- MRA Bralll30 TOF 10 854- MRA Bra11 30 TOF 12 '854· MIP·Rotate 14 ' 854· MIP·Tumble 15 BSS.Axlal~ 16 SSS.Axlal~

17 ass. Axlai iJ'M 18 ass. Axiai iJ'M 19 BS5- Ax1ai iJ'M 20 ass. Axiai O'M 21 8$5. Axlai O'M 22 855- Ax1ai 1J'M

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Sequence Process Plane HYv TR TE FA 11 Thockness Contrast 01" 20RSSG SAG 250 56 4 58 30 0 6 20RSSG COR 250 564 5.8 30 0 6 20RSSG p;)( 250 56 4 5.8 3a a 6 20Shm p;)( 400 300 5.8 9a 0 10 20Shlm p;)( 400 300 5 8 90 0 10 20FSE SAG 230 540 10 90 0 5 20FSE p;)( 220 4620 96 90 0 5 20FIR p;)( no 6600 tao 90 2000 5 30TOF p;)( 220 220 8 7 25 0 10 30TOF MIPMx p;)( 220 220 87 25 0 10 30TOF MIPMx COR 220 220 8 7 25 0 10 30TOF MIPMx COR 220 220 87 25 0 10 200\NEPI p;)( 260 4000 105 90 0 5 200\NEPI IJ'M p;)( 260 4000 1a5 9a a 5 200\NEPI AOC p;)( 260 4000 105 90 0 5 200\NEPI p;)( 260 4000 960 90 0 5 200\NEPI IJ'M p;)( 260 4000 96 a 9a 5 200\NEPI AOC p;)( 260 4000 96 a 9a 5 200\NEPI p;)( 260 4000 96 0 9a 5 200\NEPI IJ'M p;)( 260 4000 96 0 90

Figure 5-5. The Series Selector window.

2. Select and load the desired series. To select and load a single series, double

c lick the desired series. To select and load multiple series, ho ld down the

CTRL key and click each desired series, then click the OK button. The

Series Selector· window closes.

The loaded series names are listed in the Source box. The images in the series

are loaded into the viewports.

The Series Selector window has the fo llowing features:

The place of data - Click the source of the series from The place of data list.

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0AS Is-MRI System Reference Manual YbehtJ ... tlilqHt

l!il Show/Hide to be Generated Series button - When c licked, displays the series

that can be generated from scann ing, as shown in figure 5-6. Series that have not

been generated will be unavailable~ series that have been scanned will be

displayed in bold. This is a toggle function: c lick the button again to hide the

created series.

OASIS BRAIN 11/10/2011 09 52:03 ~l!il ~ OK II Cancel I Senes Name

11 Axial IJWl 12 AxlaiiJWl 13 AxlaiT2FSE 14 Axial FLAIR 15 Axial Tl FSE 16 Axial T2' GE

Note:

# of lmag ... Sequence Process Plane FOV TR TE FA n Thickness Contrast ~ 22 2DOWEPI OWl AX 260 4000 105 90 0 5 22 2DOWEPI AOC AX 260 4000 105 90 0 5 22 20FSE AX 240 6787 130 90 0 5 22 2DFIR AX 240 6700 96 90 2100 22 2DFSE AX 581 11 90 0 22 2DGE 636 144 25 0 0 "'DRSSL? ~64 ~8 'lO

Figure 5-6. Displaying the series that can be generated from scanning.

~ Prope•-ties Setting button-Opens the List Column Setting window. In this

window, you can select the propetties to be disp layed in the Series Selector

window as fol lows:

• Select the check box next to the desired property to display the property in

Refer to Chapter 4, "Patient Information Functions," for more information about the List Column Setting window.

the Series Selector window. Cl ick a second time to clear the check box and

prevent the property from being displayed in the Series Selector window. The

Show and Hide buttons on the List Column Setting wiJ1dow can also be used

to display or hide a property, but the property must first be selected. Click to

select the propetty.

• To change the propetty display order in the Series Selector window, click to

select the property then c lick the Move Up or Move Down button as desired.

When finished making changes in the List Column Setting window, cl ick OK.

5·8 Copyright© 2012 by Hitachi Medical Systems America, Inc. All rights reserved.

QS4-86717v3

Exam Window Scanning Functions 0 Releasing a Series

To remove a single series listed in the Source box, c lick to select the series and

c lick the Release button, as shown in figure 5-7. To remove all series from the

Source box, click Release All.

Figure 5-7. Displaying the series that can be generated from scanning.

The images belonging to any re leased series wi ll no longer appear in the Exam

window viewports.

Changing the Display of Series in Viewports

To change the location where a series is displayed in the Exam window

viewports, c lick the Details button in the Input Series area. The Scan Detail

Screen window opens, as shown in figure 5-8.

D<ldCOR OoQo.eSAG Odd AX Sconogroml\uol Sconogr10T1SC SconogromSC Alc.iiiT1 SE

= ~ -----------= 0

CoRtast ~nr.,.., AI:-Tme P1oro • oil 10454<4 AX

•2234 oil 10454<4 AX 10454<4 AX 10454<4 AX 10454<4 AX .

SelecOod lmoge CG..rl 20

Figure 5·8. The Scan Detail Screen window.

The Loaded Series data list shows the default viewports and the series that are

currently loaded (but not necessarily displayed). The Displayed Series data list

shows the currently displayed default viewports and series. A selected series

will be displayed in the default viewport for the plane in which the series was

scanned. For example, a sagittal series is displayed in the upper right viewport,

which is the default sagittal viewport.

5-9


5. 10

The Scan Detail Screen wi ndow contains the following buttons:

Show- Displays a series in the Exam window viewports. Se lect the series from

the Loaded Series data list then click the Show button to display the series.

When displayed, the series is a lso shown in the Displayed Series data list.

Hide- Hides a series so that it is no longer displayed in the Exam window

viewports. Select the series from the Displayed Series data list then cl ick the

Hide button to hide the series. The series is no longer listed in the Displayed

Series data list. A minimum of one listing for each plane (coronal, sagittal,

and axial) is a lways shown in the Displayed Series data list. If a ll the series

containing images are hidden, the Displayed Series data li st and the viewports

both return to default settings.

Up and down arrows- Change the location of a displayed series in the Exam

window. C lick to select the series in the Displayed Series data list then click the

up or down arrow button. The position of the series changes in the data list.

I mage- When clicked, displays the Image List and Thumbnail tabs and

associated data list, as shown in figure 5-9.

Select a series from the Displayed Series data list then click the Image List tab.

A listing of the images (with limited scan parameter information) for the

selected series is displayed in the data list. To select specific images for display

in the viewports, cl ick the check box next to the desired images. C lick a second

time to clear the check box and prevent the images from displaying.

S# Senes Name

' ~ iJ 5

OefdCOR OefiiiAISAG OetdAX Scanogram SCA Scanogram SCA 5canogtllm SCA

· 1000 off 000 off ._10 00 off • 2000 off

Slopwatc.h Tme A<q..sltJOnTome Plane

11 22.33 SAG 1122·33 SAG 11 2233 SAG 1122 33 SAG 11 2233 SAG

Cancel

Figure 5-9. The Scan Detail Screen window with the Image List tab selected.

Copyright© 2012 by Hitachi Medical Systems America, Inc. All rights 1eserved.

QS4-86717v3

Exam Window Scanning Functions 0 When the Thumbnail tab is selected as shown in figure 5-10, thumbnail images

are displayed for the series selected in the Displayed Series data list. To select a

specific image to be displayed in the Exam window viewport, cl ick the image.

The image will be highlighted by an orange frame, indicating that it has been

selected. Use the CTRL or SHIFT keys to select multiple images.

Scan Detail Screen

Sil Set1e-sfl.ame

g:~~~~-------OefOIJ~ AX

scorwomSCA ScorwomSCA Sco"""omSCA _____ _

BS2·MIIT2FSE v

Series ~-.1ame Sca""'JI'l'SCA Sc~SCA ScarwomSCA

Sequenc:e Process Ptane COR SAl> AX

20R$SO M 2DRSSO COR 2DRSSG 5AG

Sl!qUI'f"oC~ 2DRSSO 201'1550 2DRSSO

Figure 5-10. The Scan Detail Screen window with the Thumbnail tab selected.

Images selected from the Image List tab are displayed with an orange frame on

the Thumbnail tab. Images selected from the Thumbnail tab are displayed with

a check mark on the Image List tab.

When finished making changes on the Scan Detail Screen window, click OK.

The Exam window viewp01ts display the series according to the changes that

were made, such as moving a series up or down or hiding I showing a series.

5. 11


5- 12

In the Scan Detail Screen window shown in figure 5-11 , the up and down arrow

buttons have been used to change the order of the series in the Displayed Series data list from the orig ina l, or default, Scan Detail Screen window.

Scan Detail~

OefuCOII OeiMSAG De< .... AX S<anogtom ..... S.a"'9""'SC S<onogramSC AloaiTISE

N.QUI:SCIOnTrnt 10•544 IO..CS44 IQ-45:44 10.&$.44

lo-4544

2DRSSI 2DRSS<' 20RSSI 2DSE

~. I

Figure 5-11. The Scan Detail Screen window with the Thumbnail tab selected.

When the OK button is c licked, the Exam window is displayed as shown in

figure 5- 12, with the series displayed in v iewports in a different order. A series

normally loads into the default viewport for the plane in which the series was

scanned. This order can be changed using the Details button in the Input Series

area and the Scan Detail Screen window.

Figure 5-12. The Exam window with series images displayed in different viewports.


Note: GSPS does not contam the

Exam Window Scanning Functions 0 Other Input Series Area Functions

The following additional functions are avai lable in the Input Series area (figure

5-3):

Select Images button- Opens the Select Images window as shown in figure

5-13, which displays thumbnail images for the series in the selected viewport.

Use the CTRL or SHIFT keys to select multiple images. Additional selections in

this window include:

• Sort-Allows image sorting based on Image Number, Slice Number, Slice

Location, Acquisition Time, Delay Time, Image Type, or Process. Sort order

can also be ascending or descending with any of these selections.

• Specify The Range-Select the Specify T he Range check box to select a

range of images within the series to display. The numeric input boxes become

available when the Specify The Range check box is selected.

• Sk ip- Select the Skip check box to select the number of images to skip

between displayed images. The numeric input box becomes available when

the Skip check box is selected.

• Select All -Selects all thumbnail images in the series.

• lnvett Selection- Selects all images not prev iously selected and deselects al l

images that were previously selected.

• Clear All -Clears all selections.

following information because of Click OK to display the selected images in the viewport.

limitations of the standard.

• Color infonnation for overlays andWWWL

• Line thickness of overlays

• Font size for text overlays

• Rotations which are not 90 degrees (or 90-degree integral multiples)

• Position of annotations

• Position of referenced images

• Presentation state of overlay image if two images are piled together

Definition: DICOM refers to Digital Communications in Medicine.

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Figure 5-13. The Select Images window.

Save GSPS button-Saves the gray-scale and position settings (such as

zoom and pan) of the images for transmission via DICOM. This button is only

avai lable when a Review Task is selected in the Protocol Proper-ties area of the

Exam window. included in lHE-CPl purchasable option.

5- 13

0AS Is· MRI System Reference Manual YbehU ... tMqHI.

5- 14

Send -Sends a ll of the series displayed in the Review Task viewports to the

destination selected from the adjacent list box.

Patient & Study Area

This area of the Exam window, as shown in figure 5-14, displays the following

information: sex, age, weight, anatom ical region, laterality, and orientation .

Figure 5-14. The Patient and Study area of the Exam window.

Displaying the Patient and Study area is optional. To display it, click Patient

and Study on the View menu. When clicked, a check mark is displayed in front

of the Patient and Study command and the information described previously is

displayed on the Exam window. To remove the Patient and Study area, click

Patient and Study on the View menu a second time. The check mark is

removed from in front of the command and the information is no longer

displayed on the Exam window. When the Patient and Study area is displayed,

the Correct Patient button is also displayed at the right end of the Patient and

Study area (figure 5-1 5).

Figure 5-15. The Correct Patient button.

When clicked, the Correct Patient button displays the Co.-rect Patient window,

where patient and study information can be updated or changed. This window is

described in detail in Chapter 4, Patient Information Functions (figure 4-19).


Note: The maximum number of tasks that can be performed in a single open Exam window is 40.

The maximum number of tasks that can be performed for all open Exam windows is 60.

Protocol name

Tasks within protocol

Exam Window Scanning Functions 0 Protocol Properties Area

The Protocol Properties area of the Exam window displays information related to the protocol being performed. The Protocol Properties area can be displayed

in either a task name format or a graphical fonnat, as shown in figure 5-16. The

format setting can be selected from the Exam Window tab on the Window Setting window. Refer to the section titled System Sellings Windows in Chapter

9, Additional Launcher Functions, for detailed information on the Window Setting window (figure 9-48).

...l ()~r,or, llr~on

Name Time l2J! __,:!::l Oasrs Braon 25 14

• ' Sc:anogram SCA wl S.M1 01 09 -

Br>llll [7~ 1-1[ ):

• Sc-.-nSCA 00:38 ~ ' Shim Axial DO 20 - -! 'Sag Tl FSE 02 20 -" ' Axial T2 FSE (Ho-Res) 02 52 -A ' Aloll FLAIR 04 51 • ' Axial T1 FSE 03 24 -• ' Axial DW1 ss 01 09 -Q ' Review Task Q Oplional Scans ~ ' Sag Tl FSE Post Old 02 20 • • 'Axlll T1 FSEPost Oad 03.24 · • ' Cor T l FSE Post Oad 03 25 -

Figure 5-16. Protocol properties area display formats. Task Name format (left) and Graphical format (right).

The Protocol Properties area displays the following information:

Name- Shows the name of the protocol and tasks within the protocol.

Time-Shows the time needed to complete the protocol and each task.

~ Contrast- Jndicates ifthe use of a contrast agent is set in the scan parameters,

as shown in the graphical fom1at example.

QS4-86717v3

~ Gating- Indicates if a gating method is set in the scan parameters, as shown in the graphical format example.

The fo llowing symbols, which indicate task status, may be displayed to the left

of a task name:

Task is set up, has been initiated, and is waiting in the queue.

Task is in progress .

..,/ Task is complete.

Task is canceled.

Jf no symbol is displayed, the task is not set up.

5. 15

0AS Is~ MRI System Reference Manual n. hUnt llqnet

Protocol Properties Area Buttons

The buttons at the bottom of the Protocol Properties area can be used to perform

a variety of functions related to scan tasks. They correspond to the selections

found on the right-click menu in this area, as well as the selections on the

Protocol menu.

The Protocol Properties area buttons, as shown in figure 5-17, are described

from left to right in the following sections.

Figure 5-17. The Protocol Properties area buttons.

[±] Move Task Down Button

Clicking this button moves the selected scan task one position lower in the

scanning order as listed in the Protocol Properties area of the Exam window.

[;!d Move Task Up Button

Clicking this button moves the selected scan task one position higher in the

scanning order as listed in the Protocol Properties area of the Exam window.

~ Save Task <Task Name> As Button

Note: If an anatomic region was selected when the patient was registered, it will be displayed in the Anatomical Region list when the Task Selector (Save) window opens. For more information about the Anatomical Region list, refer to the "Patient Registration Window" section of Chapter 4, '·Patient Information Functions."

5- 16

C licking this button saves a changed scan task to the User Directory in the

Protocol/Task Library. To perform a "save task as" :

I. Click to select the scan task to be saved in the Protocol Properties area

and click the Save Task <task name> As button. The Task Selector (Save) window opens, as shown in figure 5-18.

2 . Use the Anatomical Region list to select where the scan task will be saved.

The selected scan task is listed in the Task Name box.

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Figure 5-18. The Task Selector (Save) window.

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QS4-86717v3

Exam Window Scanning Functions 0 The items at the bottom of the Task Selector (Save) window are as fo llows:

• Directory-Allows System I User directory (level) selection.

• Anatomical Region-Allows selection of anatomical reg ion, which is the

destination for the saved scan task.

• Process-Unavailable in the Task Selector (Save) window.

• Laterality- Allows selection of laterality for the selected scan task; changes

are reflected in the laterality column of the Task Selector (Save) data list.

• Task Na me- Displays the name of the selected scan task; name changes can

be made here before the scan task is saved.

• Sub Task Information-Select the Sub Task Information check box to

display limited information about the scan task selected in the Task Selector

(Save) window data list. Click to clear the Sub Task Information check box

and hide the scan task information display.

• Apply button- Unavailable in the Task Selector (Save) window.

• Save button- Saves the scan task in the Protocolffask Library. Fo llow the

steps below to save a scan task:

I. Click Save. lfthe scan task already exists in the library, the

Libr·aryValidateDialog window opens as shown in figure 5-19.

UbraryValidateDialog

i 1 The data already eXIsts 1n protocol/task library "V' Please choose the preservabon method

T J~·

Do you want to overwnte? • :tes ~o

New Name

OK II Cancel 6...-==~~;----:::

Figure 5-19. The LibraryValidateDialog window.

2. C lick Yes to overwrite the existing task.

OR

C lick No to save d1e selected scan task as a new task. Type the name of the

new scan task in the New Name box and press the ENTER or TAB key.

5. 17

0AS Is~ MRI System Reference Manual T1Mhlf• l ..........

Task Selector( Open )

01rectory Anatom~c.al Regtcn System Head and Neck I Br311 System Heaa a.nd Neck /BraWl System Head and Neck I Bra.n System Head ""d Neck I Bra~n Sys~m Head and Neck I 8,..0, Sys~m Head and Neck I 8rM'I System Head and Neck I Braon System Head and Neck I Braon System Head and Neck/8r31l System Head and Neck/BrBI'l System Head and Neck I Brm System Head and Neck I 6ral'l System Head and Neck/Bra~n Sys~m Head 011<1 Neck I Bra1n System Head ond Neck I Brain Sys~m Head and Neck I Bra~n System Head and Neck I Bra~ System Head and Neck I Braon System Head and Neck I Braon System Head and Neck/ Braon System Head and Neck I Bra~n System Head and Neck/Bra~n

~~m Head and Neck/Bra~n

3. Click OK to save your changes and close the Lib•·aryValidateDialog and

Task Selector (Save) windows. The saved scan task is displayed in the User

Directory of the Protocol/Task Library.

T he following two buttons are also located on the bottom left side of the

Protocol Properties area.

~ Duplicate Task Button

Clicking this button duplicates the selected task. Duplicated tasks are listed

below the currently-displayed tasks and are numbered consecutively.

[KJ Delete Task Button

Clicking this button deletes the selected task(s).

The following four buttons, Add Protocol, Add Scan, Add Post Processing, and

Add Review, are located on the bottom r ight side of the Protocol Properties area.

@] Add Protocol Button

This button functions exactly the same as the Add Scan button except it is used

to add a protocol instead of a scan.

[]] Add Scan Button

C licking this button displays the Task Selector (Open) window (figure 5-20),

which is used to add a scan task to the CUITent protocol. Use the following

procedure to add a scan task to the current protocol:

1. Locate the desired scan task using the Directory and Anatomical Region

lists. The data list area shows the scan tasks available in the areas selected

from the Dirrectory and Anatomical Region lists.

2. Click to select the desired scan task in the data list.

Name Process • Contents D~f Sequence SC811ogram Scan True GE • PC. CSF Flow A>oal Scan Fatse PC 'Axial on TensortJ6 .::: ... ~ ... Fal·se DWEPI 'Axial DTI Tensor07 ... the scan tasks available in False DWEPI 'Axiol OTI Tensorl3 False DWEPI 'AxlaiOTI Tensot'21 the locations selected from the F!tse DWEPI ' AxlaiOWISS Fal-se DWEPI 'AxlaaOWJss(Solenoldc~ Directory and Anatomical Region Fa~e DWEPI 'Axial GElR (IMRI) Fafse RSSG 'Axial T1 FLAIR lists are displayed here ... False FIR 'Axlai TJ FSE Fal:se FSE ' Axial TJ FSE (MTC) Scan Fa~se FSE 'Axial T1 GE EPI Scan False GEEPI 'Axlai T1 SE Sr:M Fal~e SE 'Axial Tl SE (MTC) Scan Fal~e SE 'Axial TJ SE EPI Scan False SE EP! 'AxlaiT2FSE Sc"" Fal-se FSE 'Axial n FSE ili>-flm ~

Far~• FSE 'Axial T2 FSE (TE 98) n c .. "'"',. c~c

'Axial T2FSE FatSat ... click to select the 'Axial T2 SE EPI Scan PI

'Axial T2 SS-FSE Scan scan task to add

!FSE 'AxlaiTT GE Scan

ScanT __ 00:115 07115 01:55 021 1 03·42 05 45 01'09 01 31 06:40 03.50 03"2~

04.01 00.26 0315 03.34 00 21 02:26 Oli2 02:38 03.16 01:110 0019 03.54

Coorast GabrlQ

poise

Modtf~ed ,..

11117120' 11117120' 11117120 11117120 11117120 11117120 11117/20 11117120' 11117120' 11117120' 11117120' 11117120' 11111/20' 11117120' 11117120' 1111 7120' 11117120' 11117120' 11117120' 11117120' 11111120 11117120'

!!~~!~~:. .. ~ 'A»• Find the scan task you wish to add by selecting >

a directory and anatomical region from the 1 1 JOOeMI r Mui!J r NSA t Mut In 6 22 2 I

Directory and Anatomical Region lists ...

1_:1

EISub Task lnformat>Cifl

Figure 5·20. The Task Selector (Open) window.

I ~pf( l Open

LQaAcel

5. 18 Copyright@2012 by Hitachi Medical Systems America, Inc. All rights reserved.

QS4-86717v3

Exam Window Scanning Functions 0 3. Cl ick one of the fo llowing buttons:

• Apply-Adds the scan task and leaves the Task Selecto•· (Open) window

open.

• Open- Adds the scan task and closes the Task Selector (Open) window.

• Cancel- Closes the Task Selector (Open) window without saving any

changes.

The newly-added scan tasks are listed below the currently-displayed scan tasks.

The items at the bottom of the Task Selector (Open) window are as fo llows:

• Directory- Allows System I User directory (level) selection.

• Anatomical Region- Allows selection of anatomical region.

• Process - If more than one process is available for a scan task, a list of

processes is displayed.

• Laterality- Allows selection of laterality for the selected scan task; changes

are reflected in the laterality column of the Task Selector (Open) data I ist.

• Task Name- Type a scan task name from the data list in the Task Selector

(Open) window and then click Open to add the scan task to the protocol

• Sub Task Information - Select the Sub Task Information check box to

display limited information about the scan task selected in the Task Selector

(Open) window data list. Click to clear the Sub Task Information check box

and hide the scan task information display.

Figure 5-20a shows a Task Selector (Open) window in which the Sub Task

Info•·mation check box has been selected and the task and parameter details

are d isplayed.

lttt1®

-------::::= 11/11 ...

::~ .

Figure 5-20a. The Sub Task Information check box is selected, and the task and parameter details are displayed.

.

5. 19

0AS Is~ MRI System Reference Manual n. htlnt llqnet

~ Add Post Processing Button

Task Selector( Open) Directory .Afiatom11:al Reg1on Name

User Head and Neck I Bra~n "ldP User Head and Neck / Brain F•lter

<]

When clicked, this button displays the Task Selector (Open) window, wh ich

was described previously. The Process list contains options for post-processing tasks. When an option is c licked from the Process list, only the tasks related to

that process are displayed in the data list on the Task Selector (Open) window.

In figure 5-21 , the Post Processing-A ll option has been selected from the

Process list, so all post processing tasks of the head and neck I brain region in

the user directory are displayed in the Task Selecto1· (Open) window data list.

---Process • Contents Del Sequ~nce Scan T Contrast Gaoog Modrfied

MIP False 11/01/2QI1 F1trer False 11/0912Q11

r ) -

DorertOI'( User y AnatomiCal Region !Head and Neck I Brain I~ Process Post Process•ng.AJJ -: Lateralty None y

~ Post Processil)li-AII A

Task Name 'SS>t> Task lnforma~on PDSt Recon

L - - --I

Mil' MPR ~~ume Render1ng

diSub n m DiffuSion ArlaM;to y

Figure 5·21. All post processing tasks are displayed for the head and neck/brain region in the user directory.

Note: For more information about post-processing tasks, refer to Chapter 8, '"Post-Processing Functions."

5-20

Select the desired post-processing task from the data list and click Open. The

task is loaded into the Protocol Propetties area of the Exam window. The new

post-processing task is listed below the currently-displayed tasks.

Copyright©2012 by Hitachi Medical Systems America, Inc. All rights reserved.

Exam Window Scanning Functions 0 (ID Add Review Button

Oorectory System System System

.....,m,cal R~ __ Name

Hoadn Nock/lhln ·-TosJ< Head n Neck 'Bra" R,.._ Head n Neck 1 Bra" w display

When clicked, this button displays the Task Selector (Open) window, which

was described previously. The data list displays review tasks that are associated

with the anatomical reg ion selected from the Anatomical Region list, as shown

in figure 5-22. Select the desired review task from the data list and c lick Open.

The task is loaded into the Protocol Prope11ies area of the Exam window. The

new review task is listed below the currently-displayed tasks .

Proeess • Contents Rt>ICW

~ == Click to select the

desired review task to add

t... Process Rev~ew

Oef Folse True False

Figure 5-22. All review tasks are displayed for the head and neck/brain region in the System directory.

Note: For more information about review tasks. see Chapter 7. "Review and Filming Functions."

QS4-86717v3 5. 21


5-22

Series Area

The Series area ofd1e Exam window, shown in figure 5-23, lists the series of

images that have been or wi ll be generated for the selected study and is used to

prev iew the images as they are generated.

S#

~ 13 Wrench icon Series of images list ~ 14 •sS4- MIP-Tumble 19

~ 24 Ref of "Volume Rendering-Rotate 3 ~ 25 •volume Rendering-Rotate 19 &~

Image pfeview afea

Figure 5-23. The Series area of the Exam window.

Display Series List

You have the option to display or hidle the series of images list in the Series area.

Click the wrench icon (figure 5-23) in the upper right corner of the Series area to

display a menu (figure 5-24) that allows the series l.ist to be displayed or hidden.

When Display Series List is c licked on the menu that appears, the series of

images list is displayed and a check mark appears on the left side of the Display

Series L ist command. Cl icking Display Series L ist a second time hides the

series of images list and removes the check mark from the menu. Figure 5-25

illustrates both states of the Display Series L ist command.


QS4-86717v3

Exam Window Scanning Functions 0

" Display Sa-les list

" Show ID be Genera1Sd Se-oes

•s54- MIP-Tumbte 19 Ref rl "Volume Rendering.RotJie 3 •volume Rendenn9-Rotate 19

Figure 5-24. The wrench icon menu.

Figure 5-25. Left images shows the Display Series List command checked (enabled), right image shows the Display Series List command unchecked (disabled).

5. 23


5-24

Show to be Generated Series

You have the option to show or hide series that have not yet been generated in

the Series area. If these series are shown they are unavailable, as the Scanogram

SCA-2 and Axial Shim-2 scans are in figure 5-24.

Click the wrench icon (figure 5-23) in the upper right corner of the Series area to

display a menu (figure 5-24) that a llows the to-be-generated series to be shown

or hidden. When Show to be Generated Series is clicked on the menu that

appears, the to-be-g,enerated series of images are shown in the series of images

I ist and a check mark appears on the left side of the Show to be Generated

Series command. If these series are shown, they can be selected and loaded

into t he source box. Once the images are reconstructed (or generated), they

will automatically be loaded into the viewports, where they can be used for the

setup of additional scans. Clicking Show to be Generated Series a second time

hides the to-be-generated series of images and removes the check mark from the

menu.

Other Series Area Functions

The lower p01tion of the Series area can be used to preview images as they are

generated. The following buttons are displayed at the bottom of the Series. area:

Position of image in series slider - Indicates the position ofthe image within

the series of images. To view images in a different part of the series, drag the

s f ider right or left.

c::J Previous Series- Displays the previous series.

GJ Previous Image-Displays the prev ious image in the current series.

8 Next I mage- Displays the next image in the current series.

GJ Next Series- Displays the next series.

~ Display Series- Displays the series of images as a cine loop, starting with the

first image. Click this button again to stop the cine display.


QS4-86717v3

Exam Window Scanning Functions 0 @] Zoom Image-Opens the Zoom Out Preview window, which is an en larged

preview wi ndow, as shown in figure 5-26. This window can be moved anywhere

on the monitor screen by dragging it to the desired location.

Figure 5-26. The Zoom Out Preview window.

00 Latest Scanned Series- When clicked, the latest scanned series will be

immediately displayed in the preview area. This button is displayed with a green

check mark when selected and with a red x when deselected.

5. 25

0AS Is~ MRI System Reference Manual Th41hU ... tMqnet

Note: A maximum of 16 series can be loaded into the viewport area for planning purposes.

Note: The slice plane for each viewport can be rearranged per user. Refer to the section titled "Changing the Display of Series in Viewports" for more details.

5 • .26

Task View Area

The task view area is divided into viewpotts, as shown in figure 5-27, which

display reference images for scan positioning. A s ingle viewport is used for each

plane as follows:

• Upper left viewport-Coronal (COR)

• Upper right viewpott- Sagittal (SAG)

• Lower left viewport-Axial (AX)

• Lower right viewpott- Displays additional images/series that have been

loaded into the Source box.

Figure 5-27. The viewports in the task view area.

Click a viewport to make it active (the active viewport is highlighted with an

orange frame). When right-clicking a viewpot1, a menu ofv iewp01t operations

is displayed. All commands on this menu are explained in the "Exam Window

Menus" section of this chapter.


QS4-86717v3

Exam Window Scanning Functions 0 ~ The arrow button at the top right corner of the viewport will maximize the

selected viewport, displaying only that image on the monitor screen. To return

the viewport to its normal size, click the arrow button a second time.

Scrollbars are available to enable movement (or scrolling) through images.

When only one series is loaded into the viewports, a scrollbar wi ll be avai lable

on the far right side of the viewports. When multiple series are loaded into the

viewp01ts, each viewport will have its own scrol lbar.

When you are starting a scan, you will see operating mode windows in the

task view area. These windows contain important information about operating

parameters and patient safety and are described in the "Operating Mode

Windows" section of this chapter.

Scan Positioning Information Bar

Information related to scan positioning is displayed (or can be entered) in a bar

under the viewports, as shown in figure 5-28. The infonnation boxes vary,

depending on whether s lice lines or presaturations have been selected in the

active viewport.

~ -' -I ,-llill~tmi

. a o4 so s

Figure 5-28. The scan positioning information bar.

The scan positioning boxes are available when slice lines are selected and are

described as follows:

X- Displays the horizonta I distance from the magnet isocenter in the selected

viewport.

Y - Displays the vertical distance from the magnet isocenter in the selected

viewport.

Angle-Displays the angle from the horizontal line in the viewport.

5. 27

0AS Is· MRI System Reference Manual n. htJ•t llqHt

Note: Refer to Chapter 6, "Scan Parameters," for more information about Exam Window scan parameters, including the Presat parameter used for presaturations.

5-28

Slice Count - Displays the number of slices for each stack.

Interval- Displayed in the scan positioning information bar when the G.Intvl

parameter is set to off. This enables the user to enter different slice intervals for

stacks when setting up multiple sl ice stacks (the G.Intvl parameter is located

in the Positioning section on the ScanParametersList wi ndow). The Interval

box is not displayed in the scan positioning information bar if the G.Iotvl

parameter is set to ON; in th is case, all slice stacks in a group will have the same

interval. The lntet-val input is then located in the Seq. Parameter section on the

ScanParameterList window.

The scan positioning boxes avai lable when presaturations are selected include

X, Y, and Angle, described previously (the Slice Count and Interval boxes

are not available). The Thickness box is also available when presaturations are

selected. This box is described below and shown in figure 5-29. Note also that

figure 5-29 displays the type of presat in the scan positioning information bar, to

the left of the X, Y, Angle and Thickness parameters.

T hickness- Indicates the thickness of the presaturation region when a value

greater than 0 is selected for the Presat parameter (located in the Advanced

section on the ScanParameterList window).

Figure 5-29. The Thickness box on the scan positioning information bar.


Note: SAR (Specific Absorption Rate) is the rate at which the human body absorbs radio frequency (RF) energy. The unit of measurement is Watts/kilogram ('~, kg).

Note: dB at is defined as the ratio between the amount of change in amplitude of the magnetic field (dB) and the time it takes to make that change (dt).

QS4-86717v3

Exam Window Scanning Functions 0 Scan Statistics Bar

Information related to scan statistics is displayed in a bar under the scan position

information bar, as shown in figure 5-30. This information is updated if

parameter or task changes are made before scanning begins.

Figure 5-30. The scan statistics bar.

The following in formation is shown in the scan statistics bar:

Resolution - Displays the fo llowing information, measured in millimeters:

frequency direction pixel value * phase direction pixel value* slice direction

pixel value.

ScanT ime - Displays the acqu isition time in milliseconds. In cases of repeated

scatlning, such as dynamic acquisitions or fluoroscopic imaging, it will indicate

the scanning time for one acquisition.

SNR- Displays the signal-to-noise ratio (SN R) calculated from the set

parameters and is updated when parameters are changed from the origi na l scan

task.

CNR- Displays the contrast-to-noise ratio (CNR) calculated from the set

parameters and is updated when parameters are changed from the original scan

task ..

SAR - Shows the specific absorption rate (SAR) calculated from the scan

parameters.

R(dB/d t) - Displays the maximum rate of variation in the magnetic field per

unit t ime. measured in testa/second (T/s).

SNR/CNR- The displayed values become the standard I 00% values fo r the

SNR and CNR, based on the set parameters.

Scanning time for the series is indicated on the far right side of this bar.

5. 29


5-30

Acquisition Pilan Area

The Acqu isition Plan area of the Exam window, shown in figure 5-31, allows

you to group scan jobs. A single scan task can be divided into scan jobs.

Multiple scan jobs, up to a maximum of eight, are called a group. Grouping

multiple scan jobs is useful for fluoroscopic proced ures or for advanced scans.

such as contrast-enhanced scans. You may a lso want to group simple scans, such

as the multiple scans performed in the same plane for brain scans.

The individual scan jobs are listed below the scan group, as shown in figu re

5-31 .

Scan group

Individual scan jobs

Figure 5-31. The Acquisition Plan area.

The buttons in the Acquisition Plan area are described below:

[]] Move Down- Moves the scan job down in performance order.

[[] Move Up- Moves the scan job up in performance order.

[ID Save Acquisition -Opens the Task Selector (Save) window (figure 5-18),

descTibed in the "Protocol Properties Area" section of this chapter, in which you

can save the acqu isution to the library .

~ Add Acquisition from Library - Opens the Task Selector (Open) window

(figure 5-20), descrnbed in the "Protocol Properties Area" section of this chapter,

in which you can add the task to be executed .

~ Duplicate Acquisition- Copies the content of the selected scan job and lists

each copied job in the window as Copy(#), where# represents the number of

times the scan job has been dupl icated (figure 5-32).

A duplicated scan job

Figure 5-32. A typical duplicated scan job.

0 Delete Acquisition - Deletes the selected job.

[Z] Acq uisition P lan P roperties-Opens the Acquisition Plan Properties

window (figure 5-33), in which parameters can be set for group scans. This

window is described in the next section.


QS4-86717v3

Exam Window Scanning Functions 0 Acquisition Plan Properties Window

The Acquisition P la n Properties window, as shown in figure 5-33, allows you

to set properties for group scans. Select an option from the G roup scan list:

• Normal- Executes the scan in the group only once.

• Dynam ic - Repeats the scans in the group a number of times.

• Fluoro- Repeats the scans in the groups in as short an interval as possible.

After a G roup scan option is selected, additional parameters appear in this

window. These parameters depend on the option selected from the G roup scan

list, as shown in figure 5-33.

Acquisition Plan Properties

Figure 5-33. The Acquisition Plan Properties window. Image left shows parameters displayed when Normal is selected from the Group scan list. Image center shows

parameters displayed when Dynamic is selected from the Group scan list. Image right shows parameters displayed when Fluoro is selected from the Group scan list.

The parameters are described below:

G roup wait mode-Select the standby mode for the group scan. Choose from

the to llowing options:

• Off- No standby when starting the group scan.

• Every (Dynam ic and Flu oro only)- Enters a start standby with each

repetition of the group scan.

• Once-Enters a start standby at the first repetition of the group scan.

Sta •·t delay- Ente r the time (in seconds) for the start wait time for the group

scan.

G roup prescan - Sclect the timing of the prescan in the group. Choose from

the following options:

• lndividual- Prescan is performed immediately before each multiscan.

• Package- Performs one prescan related to all multiscans in the group at the

beginning of scanning.

5. 31


5. 32

Repeat mode (Dynamic only) -Select the repeat mode for the group scan.

Choose from the following options:

• Loop- When scan jobs are repeated, they will always be in the same order

(for example, Scan I, Scan 2, Scan 3, Scan I, Scan 2, Scan 3, etc.).

• Yoyo- When scan jobs are repeated, their order will be reversed with each

repetition (for exam pie, Scan 1, Scan 2 , Scan 3, Scan 3, Scan 2, Scan 1, etc.).

No. of repeat (Dynamic only)- Select the number of repetitions of the group

scan.

Group gap time (Dynamic only) -Select the wait time between groups when

whole groups are repeated.

Org. Image (Dynamic only) -Select whether or not to create an original image

ofthe group. Choose from the following:

• Off- Original image is not created.

• On -Original image is created.

Sub. Image (Dynamic only) -Specifies the method for creating subtraction

images for dynamic scans. The following options are available, as shown in

figure 5-34:

• Off-Does not create subtraction image.

• Fixed -Creates subtraction images using the first scan as the mask for all

subsequent scans (fixed mask).

• Moved - Creates subtraction images in which each scan uses the previous

scan as its mask (moved mask).

• FxM v-Creates both types of subtraction images: fixed and moved.

FliP'• off off Fixed Moved FxMv

Figure 5-34. The Sub. Image list.

Sub. Mask Sta rt # (Dynamic only)-Select the repeating number for the

groups that sta11 the differential process.

Disk save (F iuoro on ly) - Save images to the database. Choose from the

following:

• Off- When selected, you must c lick SAVE to save selected images to the

database. The SAVE button is located in the bottom right corner of the Exam

window, under the STOP button.

• On-All images are saved to the database.


QS4-86717v3

Exam Window Scanning Functions 0 Copy Option Window

You can copy, link, or d isplay a variety of attributes for a selected scan job us ing

the Copy Option window. To open the Copy Option window, c lick the blue

down-arrow button next to a scan name, as shown in figure 5-35.

Click to open the Copy Option window nnmoma a

~Copy Option

Display I ACOUISrtJOns

Scanogram SCA S.Map Axial Shim BS1- Sag T1 FSE BS2- Axial T2 FSE BS4- MRA Brain 30 TOF BS5- Axial OWl BS5- Axial OWl BS5- Axial OWl Axial OWl Pre Axial TIGRE - Dynam1c

-

Post Axial TIGRE - 20sec Copy(1) Post Axial TIGRE - 20sec

•. ·1P' 1-'':':'lmet"rs

0 Position

0 Matnx

0 Bas1c Parameter

0 Presat

0 Reg1onal Sh1m

0 SelectiveiR

0 1mage

0Nav~

O AII Parameter

OK II Cancel

Figure 5-35. Opening the Copy Option window.

The Copy Option window opens, with the Copy button selected by defau lt.

This window has the following features:

Acquisitions- Lists the individual scan jobs that are ava ilable to be copied,

linked, or d isplayed. Also lists individua l scan jobs that are unavailable.

5. 33


5. 34

Parameters - Provides options for copying scan parameters. Depending on the

selected option, you can copy individual parameters or entire sections of scan

parameters. Refer to Chapter 6, Scan Parameters, for more infonnation about

individual parameters and scan parameter sections.

Select a parameter option by c licking the check box next to it. The following

options are available:

• Position-Copies the position of the slices.

• Matrix-Copies the phase and frequency parameters (in the Seq. Parameter

section of the ScanParameterList window).

• Regiona l Shim-Copies the size and location of the regional sh im, which is

represented by the purple box.

• SelectiveiR- Copies the position of the selective IR pulse for VASC-ASL.

• Image - Copies the number of images in the series.

• Basic Parameter-Copies the following individual parameters:

For 2D Sequences:

FOV

Thickness

Interval

Slice Plane

For 3D Sequences:

FOV

Thickness

Interval

Slice Plane

Slice Reject[%]

Recon Pitch

Multi slice

Stacks

Slice Ord.

Multi slab

Stacks

Slice Ord.

S lice#

Overlap[%]

• Presat-Copies the size and position of the presaturation area.

• Navi-Copies the parameters in the NAVI section.

• All Parameter-Copies all ofthe individual parameters in the following basic

scan parameter sections:

Sequence

Seq. Parameter

Advanced

Saturation

MTC

RAPID Filter/Post Processing

Positioning

Others

Copy - Copies the attributes selected in Parameters to the scan being planned.

The selected attributes are copied from the scan selected in the Acquisitions

areas in the Copy Option wi ndow. This button is highlighted in green when

selected. Cl ick OK or Appmy to copy the selected parameters.


Note: When the selected attributes are linked in the Copy Options window, the same parameters are highlighted blue in the Scan Parameters area.

QS4-86717v3

Exam Window Scanning Functions 0 Link-Links the Pos ition, Matrix, Regional Shim, Selective IR, Basic

Parameter, Presat, and Navi attributes to the scan being planned. When linked,

these attributes are copied f rom scan to scan automatically. Select the scan

to link from the Acquisition area, then click the L ink button. This button is

highlighted in blue when se lected.

C lick the OK or A pply button in the Copy Option window. The slice lines

displayed for the scan you are planning will change to blue, indicating that the ir

positions are linked. Link symbols wi ll be displayed next to the linked scans in

the Acquisitions areas of the Copy Option window, as shown in figure 5-36. A

link symbo l will a lso be displayed next to the name of the scan being planned in

the Acquisition Plan area. Three horizontal lines w ill be displayed after the link

is broken o r removed.

Figure 5-36. Using the Copy Option window to link attributes.

5. 35

0AS Is· MRI System Reference Manual YbehU ... tM.acHt

5-36

Display-Displays the Position and Presat region (these parameters are for

display only and cannot be changed here). Select the scan to be displayed from

the Acquisitions area, then click the Display button. This button will be

highlighted in yellow, as shown in figure 5-37. When the OK or Apply button is

clicked, the slice position and presaturation selected in the Copy Option

window is displayed in yellow.

Figure 5-37. Displaying the position and presat region using the Copy Option window.

A scan that is currently being planned can be linked to a previously-planned (or

source) scan in the Copy Option window (figure 5-38).


QS4-86717v3

Previously-planned (or source) scans

The parameters that link are selected and dimmed


Cor BASG Water Excolabon 30 CorPOFSE Cor GE 3D {5-FOV) CorGE 30221LESS TRUE RES

Sag PO FSE

Figure 5-38. The Copy Option window.

A link symbol is then displayed in the Acquisition Plan area, next to the name

ofthe scan that is being planned. This link symbol is highlighted yellow if a

change is made to any of the linked source scan parameters while the " linked" . .

scan IS runnmg.

When the Link button is c licked in the Copy Option window, the parameters

that link are those that are both selected and d immed . In figure 5-38, these

include the Position, Regional Shim, Selective IR, Image, Presat, and Navi check boxes.

5·37

0AS Is· MRI System Reference Manual n. htJ•t llqHt

5-38

In figure 5-39, Axial FLAIR is being planned and has been " linked" to

Scanogram SCA (source scan). Notice the link symbol next to Axial FLAIR in

the Acquisition Plan window, as well as the pale blue sl ice lines, indicating that

the slice positions are linked .

Figure 5-39. Axial FLAIR linked to Scanogram SCA.

Copyrfght©2012 by Hitachi Medical Systems America, Inc. All rights reserved.

QS4-86717v3

Exam Window Scanning Functions 0 In figure 5-40, Axial FLAIR is c urrently running. Scanogram SCA (the source

scan) has been reselected, a nd the slice positions have been changed.

Figure 5-40. Slice positions changed in the source scan.

5. 39

0AS Is~ MRI System Reference Manual YbehtJ ... tlllqHt

5-40

In figure 5-4 1, Axial FLAIR has been reselected and is stil l running. The link

symbol next to Axial FLAJR in the Acq uisition Plan window is now

highlighted yellow. This indicates that the parameters linked between

Scanogram SCA and Axial FLAIR are no longer identical. To ensure that the

linked parameters are again identical, the user should stop Axial FLAIR, c lick

Scanogram SCA, then c lick Axial FLAIR to reselect it. When the linked

parameters are identical, the link symbol wil l no longer be highlighted yel low.

Figure 5-41. Linked scans no longer identical.


QS4-86717v3

Exam Window Scanning Functions 0 Scan Parameters Area

The Scan Parameters area at the right side of the Exam window contains the

Slice Stack Moving area and various parameters that can be set for scanning

procedures (figure 5-42).

Parameters

Basic tab All tab

Figure 5-42. The Scan Parameters area.

The Slice Stack Moving area is described as fo llows:

~ Move Stack Perpendicula r - Makes the selected stack's orientation

perpendicu lar to the image's orientation.

~ Car ry O ffSet [lmage] - Sets the slice depth to the center of the selected

reference image.

~~ Auto Pose j

[QJ

Car ry O ff Set !Magnetic F ield Centet·J- Sets the slice depth to the center of

the magnetic field.

Initia lize Scan Position - Sets slices in all scan planes in a ll viewports to

isocenter.

Set stack on image- Sets a stack's position on the image.

Auto Pose- Switches the image positioning between automatic and manual.

Return to Auto Pose position - If the stack is moved and turned after Auto

Pose is executed, cl icking this button returns the stack to the position where

Auto Pose was executed.

5. 41


Note: While the system is performing the prescan operation, clicking the PAUSE button has no effect until the prescan is complete. The entire prescan continues until complete.

Note: When PAUSE iis pressed during a fluoroscopy scan, scanning will continue until the slice currently being scanned ends. Therefore, scanning may continue for several seconds after PAUSE is pressed. To stop scanning immediately, press the ABORT button on the control unit (figure 3-2).

5. 42

There are two tabs in the Scan Parameters area, as shown in figure 5-42:

• The Basic tab contains 12 default parameters. Additional parameters that are

commonly used can be added to the Basic tab to customize it. See Chapter 6,

Scan Parameters, for instructions on adding scan parameters to the Basic tab.

• The All tab contains a ll available parameters.

Refer to Chapter 6, Scan Parameters, for detailed information about the

parameters and the values that can be set for them.

START, STOP, and Other Buttons

The buttons located in the bottom right corner of the Exam window, as shown in

figure 5-43, allow you to start and stop scann ing and perform other functions.

The buttons displayed depend on the process being performed and the status of

the process. The various buttons that are available are described as follows:

Figure 5-43. The START and STOP buttons on the Exam window.

START- Begins a selected scan. You can select and set up additional scans,

then click START to place each additional scan in the queue (indicated by a

yellow triangle symbol next to the task name in the Protocol Properties area). A

scan in the queue wi ll automatically start once the in-process scan is completed.

Add itional scans are started in the same order in wh ich they were placed in the

queue.

PAUSE- This button is displayed after the START button has been selected.

Cl ick the PAUSE button to temporarily stop scanning.

CONTINUE- This button is displayed after the PAUSE button has been

selected. C lick the CONTINUE button to restart a process that was stopped by

the PAUSE button or automatically paused by the system.

STOP- Stops the scan that is currently being perfonned.

CANCEL-Cancels the processing of a selected scan and el iminates the scan

from the queue.

NEXT-This button is displayed when the scan method is Fluoro. Click NEXT

to perform the next job.

SAVE- This button is displayed when the scan method is Fluoro. C lick SAVE

to store the displayed image in the system.

Copyright© 2012 by Hitachi Medical Systems America, Inc. All rights 1eserved.

Note: Refer to Chapter 1 "Safety, " for more information about lEG 60601-2-33 standards.

QS4-86717v3

Exam Window Scanning Functions 0 Operating Mode Windows

In accordance with I EC 60601-2-33 standards, the Oasis MRJ System has three

operating modes:

• Normal Leve l Contro lled

• First Level Contro lled

• Second Level Contro lled

These operating parameters define the permissible limit values fo r dB/dt, SAR,

and acoustic no ise safety. Whe n scanning, you will see operating mode dialog

boxes that provide important information about the operating pru·ameters and

patient safety. These dialog boxes are described in this section.

Normal Level Controlled Mode

In the Nonnal Level Contro lled Mode, all operating parameters of the MRI

system are be low the level that may cause physio logical stress to patients. Figure

5-44 shows the dialog box displayed when this condition is met. Only routine

monito ring (v isual and audito ry contact a nd communication with the patient, as

appropriate) is required, and no specific indications o r measures are necessary .

' --. ' ./!:)

NORMAL LEVEL CONTROLLED OPERATION MODE

The estimated SAR and dBJdt levels are Within Normal Mode limits. Routine patient monitoring (visual and auditory) is reQuired

ACQUISitiOn Name SARrN/kg) R (d81:1t)

1 97 0 38 Scanogram Sag (l 1m11 2 00) (Limit 0 80)

Figure 5-44. The dialog box displayed when operating in Normal Level Controlled mode.

The dialog box displays the acquisition name, and SAR and dB/dt values. To

c lose this box, double-click anywhere inside the box or press the SPACEBAR.

SAR values for the Oasis MRI System can exceed the limit fo r the Normal

O perating Mode. IfSAR values are higher than this limit, the patient may

experie nce tissue heating.

The time-varying gradient magnetic fie lds (dB/dt) fo r the Oasis MRI System can

exceed the limit for the Nonnal Operating Mode. When values are highe r than

this limit, the patient may experience periphera l nerve stimulation.

5 ·43


5. 44

First Level Controlled Mode

In the First Level Controlled Mode, physiological stress may occur to the

patient. Tn addition to monitoring, medical supervision is required to assess the

risk versus benefit of the pa1ticu lar scan. The dialog box shown in figure S-45 will be displayed.

FIRST LEVEL CONTROLLED OPERATION MODE

The estimated SAR and/or d8/dt levels are within the First Level Mode limits. Routine patient monitoring (visual and auditory) and appropriate medical supervision are required. Do you want to proceed with scanning using the selected scan parameters?

AcqUISition Name SAR[W/kg) R (d8/dt)

3 75 0 60 Axial GE W MTC {Limit 2 00) {Limit 0 80)

YES I [ NO

Figure 5-45. The dialog box displayed when operating in First Level Controlled mode.

This warning will be shown the first time that the particular study is being

performed. This dialog box provides the following options:

YES-Confirms that you want to proceed with the scan.

NO-Cancels the scan sta1t. You must adj ust the scan parameters to reduce the

SAR or dB/dt levels and restaJt the scan task.

The dialog box shows the acquisition name, and SAR and dB/dt values.

In subsequent performances of the same study in the First Level Controlled

Mode, a Warning window (figure 5-45a) is displayed with the following

message:

FIRST LEVEL CONTROLLED OPERATION MODE

The estimated SAR andfor dBfdt levels remain within the First Level Mode range. Routine patient monitoring (visual and auditory) and appropriate medical supervision are required.

AcqUISition Name SAR[\1\ffkg] R (dB.Idl)

2 46 0 53 SA BASG Cine (L1mrt 2 00) (L1mrt 0 80)

Figure 5-45a. The dialog box displayed when operating in subsequent performances of the same study in the First Level Controlled mode.

Second Level Controlled Mode

Operating in the Second Level Controlled Mode may produce significant risk

to patients; it is not permitted for normal c linical use. This mode is used for

approved human studies only. Security measures (software password) prevent

unauthorized operation in this mode.


Definition: ROI is an acronym for region of interest.

QS4-86717v3

Exam Window Scanning Functions 0 Exam Window Menus

Use the menus at the top of d1e Exam window to perform the various functions

described in this section. When applicable, the corresponding toolbar buttons fo r

menu commands are shown.

Main Menu

The Main menu, as shown in figure 5-46, contains the fo llowing commands:

~ Man '~----------------------, Ed1t Patient. ..

save Image etri+S

Errbed Overlays to Image Ctri+Shlft+S

SCope Exit

Figure 5-46. The Exam window Main menu.

Edit Patien t- Opens the Correct Patient window (figure 4- 19), in which

patient information can be modified. Refer to Chapter 4, Patient Information

Functions, for com plete details on the Correct Patient window.

Save Image- Saves the selected image to the database; images must be loaded

to the Source box to access this function. The captured image will be listed at

the bottom of the database data list with a series number, series name, and the

Capture notation.

Embed Ove1·lays to Image- Embeds overlays (such as RO I, lines, and

comments) in the selected image and saves the resu lt as a new series in the

database. Images must be loaded into the Source box to access this function. The

image with embedded overlays will be listed at the bottom of the List area of the

database w ith a series number, series name, and the Capture notation.

Scope- Allows you to select the target of processing from the fo llowing

submenu commands:

• Image-Only the selected image wi ll be the target of processing.

• Series- The entire series wi II be the target of processing.

Exit-Closes the Exam window.

5. 45


5. 46

Edit Menu

The Edit menu, as shown in figure 5-47, provides the following commands:

Edit '--------, Copy

lay Fer at

Paste 'INI{Wl.

Paste Over ys

Paste A

Figure 5-47. The Exam window Edit menu.

The Edit menu is only available when a Review Task is selected from within

an Exam window. Refer to Chapter 7, Review and Filming Functions, for more

information on selecting a review task.

View Menu

The commands displayed on the View menu, as shown in figure 5-48, will vary

depending on the task you are performing.

~ "' Patient and Study

L..._

Default Window Positions

Save Window Setting

Annotation ~

Or ientation Markers ~

Gray Scale/Colorbar

Synchronous Scroll

Maximize Image

Toolbars ~

Figure 5-48. The Exam window View menu.

The available commands are described below.

Patient a nd Study-Toggles the display of patient and study information

directly above the menus at the top of the Exam window. The patient

information consists of sex, age, weight, and anatom ical region. The study

information consists of laterality and orientation. When Patient and Study

is clicked on the View menu, the information is displayed and a check mark

appears on the left s ide of the Patient and Study command (figure 5-48).

Clicking Patient and Study a second time hides the information and removes

the check mark.

Default Window P ositions- Retums the layout of the Exam window to

the initial (default) state, in which the Patient and Study area is hidden. Any

windows that have been modified while in the open Exam window will be

resized.

Copyright@2012 by Hitachi Medical Systems America, Inc. All rights reserved.

QS4-86717v3

Exam Window Scanning Functions 0 Save Window Setting-Saves the current Exam window layout state. When

subsequent Exam windows are opened after selecting Save Window Setting,

they will inherit the saved layout state.

~· . Annotation - Shows, hides, or configures the display of information on the

selected image. Select from the following choices:

• Show-On the View menu, pointing to Annotation and clicking Show

displays viewport information that has been selected to be shown. A check

mark indicates that Show has been selected and the information is displayed

(figure 5-49). Clicking Show again removes the check mark and hides the

information ..

Exam window with ___ __. Show unselected (annotation disabled)

Figure 5-49. Results of the Show command, selected and unselected.

Exam window with Show selected

Annotation enabled in viewports

5·47


5-48

• Configure-Opens the Annotation Configuration window, as shown in

figu re 5-50, where the displayed information can be customized.

Annotation Configuration Hide

Institution Name Pabent Comment PatienHd PSat Series Name Study Comment

Show

Acquisition Tome Age Anatomical Region Angle Arrhythmia rejection 8 FactoNalue Beat Rate BirthDate Complex Image Compo[ Contrast " < r >

r Show Default I OK J [ Cancel ] [ Apply

Figure 5-50. The Annotation Configuration window.

In the Annotation Configuration window, items in the Hide list are not

displayed, while items in the Show list a re displayed. The following functions

are available:

• To display an item that is hidden, select the item in the Hide list and click the

right arrow > button. The item will move to the Show list. To move all items

from Hide to Show, click the double-right-arrow >> button.

• To hide an item that is displayed, select the item in the Show list and c lick the

left arrow< butto111. The item will move to the Hiide list. To move all items

from Show to Hide, click the double-left-arrow << button.

• Use the CTRL and/or SHIFT keys to make multiple selections.

The Show Default button wi ll return the settings to the default settings in the

system.

Click an item in the Applied Filming Footer list to choose options for

displaying a footer on the image.

When you have finished making changes, click OK.


·.·· ..

QS4-86717v3

Exam Window Scanning Functions 0 Or·ientation Markers- Displays orientation markers where specified in the

selected viewport. The orientation markers are:

• H- Head

• F- Foot

• R- Right

• L-Left

• A- Anterio r

• P- Posterio r

Select a viewport, point to Orientation Markers on the View menu, and click

the desired location from the submenu as shown in figure 5-51.

Figure 5-51. Orientation markers (All selected).

5. 49


5-50

(a)

The location options for the orientation markers include:

• All- Along all four sides of the vi.ewport.

• Upper Right-Along the upper and right sides of the viewport.

• Upper Left-Along the upper and left sides of the viewport.

• Lower Right- Along the lower and right sides of the viewport.

• Lower Left- Along the lower and left sides of the viewport.

Figure 5-52 shows viewports with Upper Right and Lower Left orientation

markers.

(b)

Figure 5-52. Orientation marker examples. (a) Upper Right and (b) Lower Left.

By adjusting the orientation markers in each viewport, the market·s can be

moved for each series so they are not in the way of pe11inent anatomy. In figure

5-53, a different orientation marker option has been selected in each viewport.


QS4-86717v3


Figure 5-53. Each viev.port sports a different orientation marker setup.

The following additional commands are included on the View menu.

~ Gray Scale/Colorba r - The Gray Scale/Colot-bar command on the View menu displays or hides the gray scale/color bar in the selected v iewport, as

shown in figure 5-54. C lick Gray Scale/Colorbar to display the gray scale/

color bar. A check mark next to the command on the View menu indicates Gray

Scale/Colorba•-has been selected and the bar is displayed in the v iewport.

C licking Gray Scale/Colorbar again removes the check mark and the bar from

the v iewpo11

Gray scale/color bar

Figure 5-54. The gray scale/color bar.

5. 51

0AS Is~ MRI System Reference Manual n. hUnt llqnet

5-52

ffi]J Synchronous Scroll - The Synchronous Scroll command on the View menu

enables or disables s imultaneous scro lling in all v iewports. Click Synchronous

Scroll to e nable simultaneous scrolling in all viewports. A check ma rk next to

the command on the View menu indicates Synchro nous Scroll has been

enabled. Clicking Sync hronous Scroll again removes the check mark and

a llows scro ll ing only in the selected v iewp01t .

]]] Maximize Image- The M aximize Image comma nd on the View menu

maximizes the image in the se lected viewport to fi II the entire task v iew a rea or

returns it to its orig inal size . Click Maximize Image to enla rge the image so it

occupies the e ntire task view area . A check mark next to the command on the

View menu indicates Maximize Image has been enabled (figure 5-55). C liclk

Maximize Image again to remove the c heck mark and return the image to its

orig inal size.

Figure 5-55. Image maximized, occupies the entire task view area.


QS4-86717v3

Exam Window Scanning Functions 0 Toolbars- The Toolbars command on the View menu displays or hides

toolbars on the Exam w indow. Pointing to Toolbars on the View menu displays

a submenu where one or more of the follow[ng toolbar commands can be

clicked (figure 5-56):

• Standard

• WW/WL

• Zoom/ Pan

• View

• Tools

• Scan Tool I

• Scan Tool 2

• Configure

A check mark next to the command indicates the toolbar is displayed. The

buttons that comprise the selected toolbar appear directly below the menu bar at

the top of the Exam window. The buttons on the toolbars are described in the

Too/bars Available in the Exam Window section of this chapter.

Figure 5·56. Selecting too/bars for display.

5. 53


5-54

Pointing to Toolbars and c licki ng Configure displays the Review Tool Bar

Setting window (figure 5-57). This window allows more than one toolbar to be

displayed at a time. Cl ick the desired toolbar check box(es) and click OK to

enable multiple toolbars for display in one step.

Review Tool Bar Setting ~ Standard 0 WNNVL 0 Zoom/Pan -0 Rotate -0 View 0 Overlays 0 Tools 0 Cine

I OK I

Figure 5-57. The Review Tool Bar Setting window. Enable several too/bars in one step.

Overlays Menu

The Overlays menu is on ly available when a Review Task is selected from

within an Exam window. Refer to Chapter 7, Review and Filming Functions, for

more information.

Controls Menu

The Controls menu commands allow image displays to be manipulated using

the WW/ WL, Zoom, and Pan functions. These commands, shown in figure 5-58,

are described in the following sections.

Select Mode

Controls I

, :;~~ode Zoom/F'an

Reset Image

Figure 5-58. The Exam window Controls menu.

·~ The Select Mode command on the Controls menu resets the state of the mouse

pointer when an item is selected. Select an ROI, line, or textual annotation to

activate it (the selection wi ll tum green). You can then manipulate the selection

(such as changing its size, moving it, or rotating it) by dragging the rotation

control or handles around the active ROI , line, or text. Select Mode is also a

right-click menu selection


QS4-86717v3

Exam Window Scanning Functions 0 WW/WL

The WW/WL command on the Controls menu changes the window width

(WW) and/or window level (WL) of an image within a viewport. The window

width represents the range of contrast values, whi le the window level represents

the central value in that range. Both are used in determining the brightness and

contrast of a displayed image.

Pointing to the WW/WL command opens a submenu, as shown in figure 5-59,

with the following commands:

Controls ! ., Select Mode

WW/WL • AutoWWfWL

Zoom/Plln • By Mouse • WW/WL Rotate • Settlng .... Wl

I Invert Grlly SCllle ww

Reset lmllge Non· llnellr ••• ....____ - ,-,et

Figure 5-59. The WWIWL command and submenus.

LJ., Auto WW/WL- Automatically displays the se lected image at the preset

window width and window level.

... ~ • By Mouse- Allows the window width and window level of the selected image

to be changed by dragging the pointer. The arrow-shaped symbols are shaded

from dark to light, representing how the image is affected by dragging the

pointer in the direction indicated by the arrow. The choices are:

• WW /WL- Changes the window width by dragging left and right; changes

the window level by dragging up and down.

• WL- Changes the window level by dragging up and down.

• WW - Changes the window width by dragging left and right.

A check mark next to the command indicates which one has been selected

5. 55


5-56

~~~ Setting- Opens the WW/WL window, as shown in figure 5-60.

WW/WL LUT Wtndow

Width Window

Level

1025 ..... 527 .....

Figure 5-60. The WW/WL window.

Use the Window Width scroll bar to set the selected image's window width and

the Window Level scroll bar to set the window level. Note that width and level

values can a lso be entered directly into the Window Width and Window Level

boxes above each scroll bar control. As the scroll boxes are moved (or the scro ll

arrows clicked), the window width and window level change in the selected

viewpott of the Exam window. The numerical values in the Window Width and

Window Level boxes also update when the scroll boxes are moved. The LUT control a llows you to adjust the upper and lower values of the hue selected in the

Hue list (GraySca le, Ra inbow, Red, Green, Blue, etc.). Cl ick OK to save any

changes made and c lose the WW /WL window.

A check mark next to the Setting command on the WW/WL submenu indicates

its selection.

• Hue - The Hue I ist is used to select a hue fo r the selected image.

• Invert Gray Scale-Select the Invert G ray Scale checkbox to invett

the gray scale ofthe selected image. Click to clear the Invert Gray Scale

checkbox to return the gray scale display to its original state.


QS4-86717v3

Exam Window Scanning Functions 0 • W rench icon button-Clicking the wrench icon button opens the

L UTSetting window (figure 5-61 ), which allows you to create a new LUT.

LUTSettlno

lUl Ull

lEST

6J-6J~ !IRed i!IPn !II Orange lfl~~<oge l'iiG<oen if)Ba.oo i!IRec-.UT

Save As

c •

Figure 5-61. The LUTSetting window.

The following controls are avai lable on the LUTSetting window:

• LUT List-Displays the LUT (Look Up Tables) currently saved in the

system.

o Delete- Deletes the selected LUT from the LUT List. Note that LUT with a

lock icon ( J!l ) are protected and cannot be deleted.

o Color Bar-Allows you to set a maximum of eight colors for use in the

image. C lick the color bar to select a setting position then click a color chip

from the color palette. The selected color chip will be set in the selected

position on the color bar. Continue this process to set the desired colors.

o C lear- When c licked, clears the colors set in the color bar.

• Basic colors - Shows a color palette from which colors may be selected.

Select the desired color by cl icking a color chip.

• Custom colors- Displays customized colors created by your site. These

colors are created using the More ... button.

o More .. . -Opens the Color window, as shown in figure 5-62, which allows

customized colors to be created. To create a custom color, proceed as follows:

!.Click the color bar to select a setting position.

2. Select a Basic color chip (or a Custom color chip if any have been

defined).

3.Ciick the More .. . button. The Color w indow (figure 5-62) opens.

4. Adjust the color in one of the fo llowing ways: move the scroll bar arrow,

move the cursor in the large color box, or type values.

5·57


5-58

5.Ciick Add to Custom Colors to save the color to the Custom color

palette.

Figure 5-62. The Color window.

6.Ciick OK to close the Color window.

7.Ciick OK in the LUTSetting window to accept the custom color.

• Smoothing- Select the Smoothing checkbox to smooth the color bar display

so that colors blend seamlessly together. Click to clear the Smoothing

checkbox to return the color bar display to its original segmented-color state.

• Above Lower Value-Click Above Lower Value to color display above

lower value of WW /WL.

• Below Upper Value-Click Below Upper Value to color display below upper

value ofWW/WL.

• Within Range-Click Within Range to color display within range ofWW/

WL.

• Save As .. . -Opens the Save LUT window (figure 5-63) when clicked.

Allows a new LUT to be saved in the LUT L ist by entering a name in the

Name box and clicking OK.

Save LUT

Please provide a name to save it.

Name

OK Cancel

Figure 5-63. The Save LUT window.


QS4-86717v3

Exam Window Scanning Functions 0 ~ Invert G ray Sca le- Inverts the gray scale value of a selected image, as shown

in the lower left viewpot1 in figure 5-64. A check mark next to the command

indicates its selection.

Figure 5-64. Applying the Invert Gray Scale command.

5. 59


Note: Even if Invert Gray Scale, Non-Linear, or Color WWIWL options are applied to images, the images are stored to media and DICOM transferred without the options applied. However it is possible to send secondary capture images as RGB when Color WW!WL is applied.

Note: Hitachi recommends the use of Linear WWIWL for clinical imaging, which is the default setting.

Note: The non-linear window settings do not apply once the patient exam window is closed.

5. 60

Non-L inear-Opens the Non-Linear Window Width/Window Level window, as shown in figure 5-65. This window allows changes to be made to the

default WW and WL linear relationship.

Figure 5-65. The Non-Linear Window Width/Window Level window.

There are three control points on the graph, shown as red circles in figure 5-65.

To change the linearity of the window width or window level, drag a control

point to the desired location. Control points can be added by holding the SHIFT

key and clicking a location on the graph, as shown in figure 5-66. When a

control point is added or dragged to a new location, the Non Linear button is

automatically selected. C lick ing the Linear( reset) button resets the graph to the

default linear state.

Figure 5-66. Changing the linearity with an added control point.

When you have finished making changes, cl ick OK.


QS4-86717v3

Exam Window Scanning Functions 0 Zoom/Pan

The Zoom/ Pan command on the Controls menu allows the selected image to be

enlarged, reduced, or moved. The mouse pointer will take the shape of a

magnifying glass for the Zoom function and a hand for the Pan function.

Pointing to the Zoom/Pan command opens a submenu, as shown in figu re 5-67,

with the following commands:

~trois ~. Select M<xle

IMN/WL • ZoorrvPan • Zoom Sy Mouse

'-1 Resetr mage Zoom Sy Slide.-...

Pan By Mouse

Reset

Figure 5-67. The Zoom/Pan command and submenu.

q. Zoom By Mouse-Allows the selected image to be magnified by dragging the

mouse up or reduced by dragging the mouse down. A check mark next to the

command indicates its selection.

~1 Zoom By Slide r - Opens the Zoom window, as shown in figure 5-68.

Figure 5-68. The Zoom window.

As the scroll box is moved (or the scroll arrows clicked) to select the desired

magnification factor, the magnification will change in the selected viewport

of the Exam window. The numerical value in the Magnification Facto•· box

updates to reflect changes made with the scroll box. The magnification factor

can a lso be changed by entering a value directly in the Magnification Factor

box, and then pressing the ENTER key. When finished, click OK

~ Pan By Mouse- Allows an image to be moved in the same direction as the

mouse pointer when the pointer is dragged. The pointer wi ll take on the shape of

a hand. A check mark next to the command ind icates its selection.

9. Reset- Returns a magnified, reduced, or moved image to its default (original)

condition.

5. 61


5-62

Reset Image

"'d The Reset Image command on the Controls menu resets a selected image to its

default (original) conditions for window width, window level, magnification,

and position.

Tools Menu

The Tools menu command allows add itional modifications to images. These

commands, shown in figure 5;69, are described in the followi111g sections.

~ Image • 1 Magnification Glass l Grid • Calper • CrossScale

Figure 5-69. Tools menu commands.

~ • Image- Pointing to the Image command on the Tools menu opens a submenu

that allows images to be manipulated with a magnification feature. Pointing to

the Image command and clicking the Magnification Glass command opens the

Magnification Glass window and places an image box in the selected viewport,

as shown in figure 5-70.

Figure 5-70. The Magnification Glass window and image box.


QS4-86717v3

Exam Window Scanning Functions 0 To use the magnification g lass feature, proceed as follows:

I. Place the pointer over the image box; the po inter changes to a diamond

shape and the image box changes to bright green.

2 . Drag the image box over the portion of the image you wish to magn ify.

The area displayed inside the image box is magnified in the Magnification

G lass w indow. The zoom factor is set at 5.12x magnification.

3 . To c lose the Magnification G lass window and el iminate the image box,

click the X button in the to p right comer ofthe window.

l!!e . G .-id- The Grid command on the Tools menu a llows a g rid to be displayed in

the selected viewport. Po inting to the Grid command opens a submenu. as

shown in figure 5-7 1, w ith the fo llowing grid selections: 5 mm, I 0 mm, 20 mm,

or None. A check mark next to the command indicates w hich size has been

selected. Figure 5-71 shows a viewport with a I Omm grid displayed.

Figure 5-71. A viewport displaying a 1 Omm grid.

5. 63


Left caliper

5. 64

Caliper- The Caliper command on the Tools menu allows the selection of a

location for the caliper measurement scale. Pointing to the Caliper command

opens a submenu with the fo llowing locations: Left, Lower Left, Right, Lower

Right, and None. A check mark next to the com mand indicates which location

has been selected. Figures 5-72 shows various caliper display locations.

Lower right caliper /

Figure 5-72. A Left caliper measurement scale location (top image) and a Lower Right caliper measurement scale location (bottom image).


QS4-86717v3

Exam Window Scanning Functions 0 + C ross Scale - The CrossScale command on the Tools menu displays a cross

scale on the selected viewport as shown in figure 5-73. These cross-scale lines

can be used as guides for centering and measurement. A check mark next to the

command indicates its selection.

Cross scale

Figure 5-73. CrossScale enabled on the selected viewport.

Queue Menu

The Queue menu, as shown in figure 5-74, provides the following commands:

Que,Je I

l ~.., Rwm;~ining TirrlW

Job Queue

WaveForm

Str:JpWatrh

Patient Table Information

Figure 5-74. The Queue menu.

_......=~ 02:07 Scan Remaining Time- Displays the Scan Remaining Time window, wh ich

allows the progress of scans and post-processing tasks to be checked . This

window is described in detail later in this chapter.

~ Job Queue- Displays the Job Queue window, which allows the progress of

filming, storage, DICOM, and post-processing tasks to be checked. T his window

is described in detail in Chapter 9, Additional Launcher Functions.

~ WaveForm- Displays the WaveForm window, which is used to check

e lectrocardiogram, respiratory, or pulse waveforms for gating procedures. This


~ StopWatch - Displays the StopWatch window, which is used to time

procedures. This window is described in detai l later in this chapter.

6 Patient Table Information-Displays the Patient Table Information window,

which is used to monitor and adjust the position of the patient table. This


5. 65


Tip: You can hold the pointer over a too/bar button to view the button's name and/or function.

5-66

Toolbars Available in the Exam Window

You can select the tool bars that you want to display in the Exam wi ndow using

the Toolbar command on the View menu, which was explained prev iously.

The buttons on a tool bar g ive you quick access to functions that may a lso be

available through window menus. The functions available on each tool bar are

described in the following sections.

Toolbars

The following toolbars can be displayed by pointing to the Toolbars com mand

on the View menu, and then clicking the desired toolbar(s). The corresponding

toolbar will be displayed at the top of the Exam window.

Standard Toolbar - The Standard tool bar (fi gure 5-75) conta ins buttons for the

following functions: Select Mode, Scope, WW /WL By Mouse, Zoom By

Mouse, Pan By Mouse, Auto WW/WL, Reset Zoom/Pan, Reset Image, and

Capture (these buttons were previously expla ined in the Main Menu and

Controls Menu sections). The Capture button is only avai lable when there are

images loaded in the Source box. The unavailable buttons (Copy and Paste) are

only available from a Review Task that is loaded into the Exam window.

Figure 5-75. Standard too/bar.

WW IWL Tool bar - The WW /WL tool bar (figure 5-76) contains buttons for the

fol lowing functions (prev iously explained in the Controls Menu section): Auto

WW/ WL, WW/WL By Mouse, WW/WL Setting ... , Invert Gray Sca le, Non

Linear WW/WL, and Preset WW/WL.

Figure 5-76. WW/WL too/bar.

Zoom/Pan Toolbar- The Zoom/Pan toolbar (figure 5-77) contains buttons for

the following functions (previously exp lained in the Controls Menu section):

Zoom By Mouse, Zoom By Slider, Pan By Mouse, and Reset Zoom/Pan.

1 q.~~ ~e = ______________ _J.

Figure 5-77. Zoom/Pan too/bar.


QS4-86717v3

Exam Window Scanning Functions 0 View Toolbar- The View toolbar (figure 5-78) contains buttons for the

following functions (previously explained in the View Menu section): Show/

Hide Annotation, Orientation Markers, Gray Scale/Colorbar, and Maximize

Image.

Figure 5-78. View too/bar.

Tools Toolbar- The Tools toolbar (figure 5-79) conta ins buttons for the

following functions (previously explained in the Tools Menu section): Grid,

Caliper, Cross Scale, and Image Tools.

Figure 5-79. Tools too/bar.

Scan Tool 1 Toolbar

The Scan Tool I tool bar, as shown in fi gure 5-80, is made up of buttons that are

useful when setting up scans.

Figure 5-80. Scan Too/1 too/bar.

This toolbar contains buttons that perform the following funct ions:

~ Pointer- Use to drag or select in the viewpott.

~\ Create Stack-Adds a new stack. Click this button, then drag the pointe r in the

selected viewport. A stack is created along the dragged line.

·~)._ Delete Stack- Deletes the selected stack.

~ • Create P resat- Creates a new presaturation region. Provides a menu with the

following commands:

X

• Create Anywhere- Creates a presaturation region in a position that you

define. Dragging the pointer in the selected viewport creates a presaturation

region along the dragged line.

• Create Parallel to Stack- Creates a presaturation region in a position

paralle l to the stack (slice line). The presaturation region will tl1en move in

conjunction with any movement or rotation of the stack.

Delete P resat- Deletes the selected presaturation region.

5·67


5. 68

~ Translate Presat-Moves the presaturation region to a position parallel to the

stack. After selecting a presaturation region, click this button then c lick a stack

to move the presaturation region to a position parallel to that stack. The

presaturation region will then move in conjunction with any movement or

rotation of the stack.

_-{ ~ Divide Stack- Divides a stack. Click the stack to be divided, then click this

button. From the menu that appears, select the number of divisions for the

se lected stack (the range is from a minimum of one to a maximum equal to the

number displayed in the Multi slice parameter in the Scan Parameters area).

The number displayed in the Stacks box in the ScanParameterList window is

updated after stacks are divided.

:1 Combine Stacks- Select the stacks you wish to combine by holding down the

CTRL key while c licking the desired stacks. Cl ick the Combine Stacks button.

The selected stacks will be combined into a single stack. The slices in the

com bined stack wi ll be renumbered accordingly.

{} Register 3 Points - After placing up to three points in the selected viewport , a

stack passing through the three points is created.

~ • Delete Points-Allows you to delete the points that you have placed. You can

delete point I, point 2, point 3, or all points. After you delete a point, the

remaining points wull be renumbered. For example, ifyou start with three points

and delete point I, the remaining points (origina lly points 2 and 3) will become

points 1 and 2.

/~ Select Line & Box-Changes the appearance of the slices in a stack. This

function is a toggle: when selected (the button will have a white background),

the s lices display in a box format; when deselected, the slices display in a line

format.

~ . -Stack Guide Line- Displays or hides the extended slice line on both ends of

the stack. This function is a toggle: c lick the button to display the extended

guide line, and cl ick again to hide the line.

~ G Interval-Changes made to the G Interval button on the toolbar are reflected

in the G. Intvl box found in the Positioning section of the ScanParameterList

window. When the G Interval button is clicked and G. Intvl is ON, changing

the s lice interval for one stack (in a multiple stack group) will change the slice

inter-val for al l stacks by the same amount. The Interval box will be displayed

under both the Basic parameters tab and the Seq. Parameter area of the All tab

in the Scan Parameters area. When the G Interval button is not clicked and G.

IntvJ is off, different slice intervals can be set for each stack (in a mu ltiple stack

group). The Interval box wi ll be displayed on the scan positioning information

bar at the bottom of the viewports.


QS4-86717v3

Exam Window Scanning Functions 0 ~ O pen Sca n Position Control-Opens the ScanPositionControl window

(figure 5-81 ), which allows you to move d1e stack in the direction of the arrows.

There is a greater degree of movement when you use the double arrow buttons.

ScanPosltionControl Ef

~~ ~~~ ~

-~ ~~ ~

i!==== ~

Figure 5-81. The ScanPositionControl window.

Scan Tool 2 Toolbar

The Scan Tool 2 toolbar, shown in figure 5-82, contains buttons that allow you

to change frame and viewport layouts, as well as output image displays. Certain

buttons are only active when F luoro is selected in Multi scan mode, which is

found under the Scan Control area of the ScanParameterList window.

Figure 5-82. The Scan Tool 2 too/bar.

The tool bar functions arc described as follows.

Change Layout - Changes the layout for a ll viewports in the task view. From

the menu, choose+ Shape, E Shape, or T Sha pe, as shown in figure 5-83. If

you select a shape with the "All acquisitions" featu re, the images from all ofdle

acquisitions in the same scan plan will be displayed in the chosen shape.

Est>.;pe

T Shape

+ Shape (All acq..osotms)

E 5t>.;op& (All a<q.Jisltuls)

T 5llapa (All acq.Jsltllln$)

Figure 5-83. The Scan Tool 2 too/bar.

5. 69

Exam Window Scanning Functions 0 --------------------------------------~5

QS4-86717v3

Figure 5-86. The T shape.

Show/Hide output images-Only available when Multi scan mode is Fluoro.

Shows or hides the result images from fluoroscopic scanning. When Multi scan

mode is Fluoro and this button is clicked, a viewport that displays the result

image is shown. This function is a toggle: click the button again to hide the

result image.

~ Display output images mode-Only available when Multi scan mode is

Fluoro. Displays a large, s ingle viewport for the result image.

~ Display all reference images for a ll acquisitions - Displays reference images

for all scan jobs included in the same acquisition plan.

5. 71


5. 72

EH • Change Viewport Layout-Only available when M ulti scan mode is F luoro.

Allows you to change the output viewpo11layout on ly. C lick the down arrow to

display a menu, as shown in figure 5-87. Select a layout for display in the output

viewp011. In figure 5-87, the bottom left viewpo11 is displaying the 3x3 layout.

- - - ___::_ - - - -=- - - - - - -- - - - - -= <>111 ... ~-

Figure 5-87. Change output viewport menu layouts.


Exam Window Scanning Functions 0 Other Windows Used During Scanning

Note: The display position of the Scan Remaining Time window will change depending on where the Launcher too/bar is docked.

QS4-86717v3

While using the Exam window during scanning procedures, you can access

other windows that provide the fo llowing functionalities:

• Scan Remaining T ime window- Shows scanning progress.

• WaveForm window- Displays waveforms transmitted from patient sensors.

• StopWatch window- Allows you to time tasks.

• Patient Table window- Shows the position and status of the patient table.

These windows are described in the following sections.

Scan Remaining Time Window

The Scan Remaining Time window a llows scan progress to be checked. To

open the Scan Remaining T ime window. click the green progress bar in the

upper-right corner of the Exam window.

The Scan Remaining Time window opens, as shown in figure 5-88.

Emergeltey Patient ~·•u1..-.::a·r01fto~2l

Figure 5-88. The Scan Remaining Time window.

The top of the Scan Remaining Time window d isplays patient name, patient

ID, and the following infonnation (figure 5-89):

Progress bars

..... _r_ ~IJ a Time remaining for all scans Emetgettey Patient ..... ,,.,.. ""'"" . • Total time for all scans

0941 ... / 0139 ·"~Total time for current scan

Time remaining for current scan

Figure 5-89. Information displayed in the Scan Remaining Time window.

Progress ba•·- Displays the progress toward completion of all scan tasks or the

current scan task.

T ime display - Shows the time remaining and total time for a ll scan tasks or

for the current scan task.

5-73


5. 74

Both the progress bar and time display can be set up to reflect the status and

total time for all scans or for just the current scan (figure 5-90).

ll tl

Elllflfgency Patient !z:n A-1)1M5100iahllll8fMl

n fSE Po.t Oed Ot1V03 t1

Figure 5-90. Scan Remaining Time window set up to reflect status and time for all scans (left) and for current scan only (right) .

To select one of these options, follow this procedure:

1- Click the System Settings Launcher button. From the menu that appears,

c lick Scan System Setting.

2 The Scan System Setting window opens, as shown in figure 5-9 1. C lick the

Scan Remaining Time tab.

"i Scan Sysll&m Setting

Figure 5-91. The Scan Remaining Time tab on the Scan System Setting window.

3 Under the Display Scan Remaining Time heading, click one ofthe

following options:

• All execution scans (l ncluded reserved scan) - To display status and

timing for all scans.

• Scan under the current execution - To display status and timing for the

current scan only.

4. Cl ick OK.


QS4-86717v3

Exam Window Scanning Functions 0 The bottom of the Scan Remaining Time w indow contains the fo llowing

features and information, as shown in figure 5-92:

._IA_xia_I_T_I F_S_E -~---~~ 03:19/03.24 Compress button

I._Ax_ia_I_DWI ____ __.I 01:09/0109

Figure 5-92. The bottom of the Scan Remaining Time window.

Scan task sta tus button-Displays the status of the pa1ticular scan task as

fo llows:

Scan is being performed. Click the green circle to pause, continue, or stop the

scan.

Scan task is sti ll in the queue (the patient table is empty). Cl ick the yellow

triangle to delete the scan from the queue.

Scan task na me- Shows the name of the current scan task being performed.

Drag a scan task name to move it higher in the queue order.

Time display-Shows the time remaining and the tota l time needed for the

current scan task being performed.

5. 75


5. 76

J Gbs Waiting - Displays the number of scans remaining in the queue.

G""] Compress button- Shows/hides the bottom of the Scan Remaining Time

window. Click the downward-pointing double arrow button to expand the Scan

Remaining Time window and display individual scan task status information.

When expanded, the downward-pointing double arrow button changes to an

upward-pointing double arrow button that can be clicked to compress the Scan

Remaining Time window and hide the individual scan task status information.

To re-order the scan tasks in the Scan Remaining Time window, drag the

desired scan task to a new location in the queue.

Dynamic Mode

When Multi scan mode is Dynamic, the Scan Remaining Time window

changes to show the status of the dynamic scans being performed, as shown in

figure 5-93.

Sal~tR---.r... !!I ct

Emergency Patient :ZUA-Il~:!'JUQOIHOHlUI

'0'2:43 ., .. ,

~Status boxes TIFSE &!

COIT1 f:S£ r(i

• • • ' " D . t .... ,.., ynam1c coun 41/12e ....

Figure 5-93. The Scan Remaining Time window when Multi scan mode is Dynamic.

Sta tus boxes-After the initial prescan is complete, the status boxes appear.

The status boxes show the status of each scan in the Dynamic mod.e. The color

of the box indicates the status, as follows:

• Gray box- Indicates a scan is completed.

• Green box-Indicates a scan is currently being petformed.

• White box- Indicates a scan is still in the queue.

Dyna mic count-Indicates which dynamic scan is being performed and the

total number of dynam ic scans to be performed (in figure 5-93, 3 I 5 means the

current scan is the third of five total scans).

A time display and progress bar are also displayed. The upper (larger) progress

bar indicates the status of the entire dynamic study. The smaller (lower) progress

bar shows the status of each individual dynam ic scan.


QS4-86717v3

Exam Window Scanning Functions 0 Fluoro Mode

Fluoroscopic scans are performed a number of times in the same slice location.

When Multi scan mode is F luoro, all of the times displayed in the Scan Remaining Time window change to-:-, as shown in figure 5-94.

Figure 5-94. The Scan Remaining nme window when Multi scan mode is Fluoro.

5. 77

0AS/S~ MRI System Reference Manual The P'ltr•t Mapel

Note: WaveForm Window

The WaveForm window allows you to view electrocardiograph, pulse, or

respiratory waveforms that are transmitted from electrodes or sensors attached

to a patient. The WaveForm window is used when gating is being performed

to correct for image artifacts (caused by respiratory or cardiac motion) or for

triggered cardiac studies.

If the WaveFonn button is not visible on the Launcher too/bar. it can be added by right-clicking the Launcher too/bar and then selecting Customize. Refer to the "Launcher Buttons" section in Chapter 3, "System Overview," for a detailed description of the Customize feature.

E£g To open the WaveForm window, click the Waveform Launcher button. The

WaveForm window opens, as shown in figure 5-95, and 5-96.

Note: If a gating procedure is started without the EGG sensor or respiration sensor attached correctly, the waveform display will terminate after a predetermined time. In this event, check to make sure the sensors are securely attached and then restart the gating procedure.

5. 78

The name of each waveform displayed is shown in a button at the top ofthe

window. Click the button to display the waveform (assuming electrodes or

sensors are attached to the patient and signals are being transmitted). A symbol

corresponding to each waveform is shown next to the waveform name on the

button and in the graphic display area. You can display a maximum of two

waveforms at a time. Pulse and Respiratory waveforms, or ECG and Respiratory

waveforms can be displayed together; Pulse and ECG waveforms cannot be

displayed together.

Figure 5-95. Single wavefonn display.

PULSE

I I I I I I I

, - X

):

. , 68 I

-t-------------- r· ____

1

ri'i~-_,~

Figure 5-96. Two wavefonns, one viewport.


QS4-86717v3

Exam Window Scanning Functions 0 ECG Wave (ECG)-Displays the electrocardiograph waveform and heart rate

transmitted from ECG sensors, as shown in figure 5-97. Click the ECG button to

display the ECG waveform.

Figure 5-97. EGG wave.

Pulse Wave (PULSE)- Displays the pulse wave and heart rate transmitted

from a finger sensor, as shown in figure 5-98. Click the PULSE button to display

the pulse waveform.

Figure 5-98. Pulse wave.

Respiratory Wave (RESP)- Displays the respiratol)' waveform and

respiration rate transmitted from a belt sensor, as shown in figure 5-99. Click the

RESP button to display the respiratol)' waveform.

Figure 5-99. Respiratory wave.

5. 79


5-80

To display additional information, click the wrench button in the top right corner

of the WaveForm window. The WaveForm window menu appears with the

following choices, as shown in figure 5-100:

Width Range

H'eight Range

Options

Pause

Figure 5-100. The WaveForm window menu.

Width Range- Determines the width ofthe graphic display; the choices range

from2to 10.

Height Range-Determines the height of the graph ic display; the choices are

0.5, I, 2, and 4.

Width Range and Height Range each have a menu where selections are made.

Options - Opens tlhe Wave Form Options window, which is described in the

next section.

Pa use-Pauses the display; a check mark indicates that Pause has been

selected.

Wave Form Options Window

Click Options to open the Wave Form Options window, as shown in figure

5-I 0 I , where you can change detai Is of the WaveForm window.

PulseW'<NE Respiratory Wave

Gate Info

Scan T1m1ng

Background

:,no Settings

Gnd Type Check Marl< • Lines

GridColor ~

Other :,e!tmll~ 0 Separate Viewport 0 Sound

Opacity BO%

OK :J 1 Cancel

/ Color chips

Figure 5-101. The Wave Form Options window.


QS4-86717v3

Exam Window Scanning Functions 0 G raph Colors-Allows you to change the colors of the ECG wave, pu lse

wave, respirat01y wave, gating information, scan timing, or background of the

display. Follow the procedure below to change a color:

I. C lick a currently-displayed color chip to open the C olor window, as shown

in figure 5- l 02.

Color ?

Figure 5-102. The Color window.

2. C lick a new color to se lect it.

3. C lick OK to accept the new color and return to the Wave Form O ptions

window. The new color will be displayed as a color chip in the Wave Form

Options window.

G rid Settings- Allows you to change the grid display as follows:

• Grid Type- Click the Check Mark or Lines option.

• Grid Color- Follow the procedure below to change the grid color:

I. C lick a currently-displayed color chip to open the C olor window, as shown

in figure 5-I 02.

2. C lick a new color to select it.

3. C lick OK to accept the new color and return to the Wave Form O ptions

window. The new color wil l be displayed as the G r id Color chip.

Other settings - Allows you to change the fo llowing:

• Separate Yicwp01t -Select the Separate Viewport check box to display each

waveform in a separate viewport. Cl ick to c lear the Separate Viewport check

box to display the wavefonns superimposed in a single viewport.

• Sound-Select the Sound check box to turn the sound on. Click to clear the

Sound check box to turn the sound off.

5. 81


• Opacity-Sets the degree of opacity/transparency of the WaveForm window

display. Move the slider to the right to increase the opacity or to the left to

decrease the opacity. The opacity va lue is also displayed as a percentage. An

opacity value of I 00 percent means that you will not be able to see through

the WaveForm window; lower values make the window more transparent.

When finished making changes, click OK to save the changes and close the

Wave Form Options window.

StopWatch Window

The StopWatch window allows you to measure the time for tasks and use an

alarm. You will typically use this window when you need to inject a contrast

agent at a specific time during an exam.

~ To access the StopWatch window, click the StopWatch Launcher button. The

Note: If the StopWatch button is not visible on your Launcher too/bar, you can add it by right-clicking the Launcher too/bar and then selecting Customize. Refer to the "Launcher Buttons" section in Chapter 3, "System Overview," for a detailed explanation of the Customize feature.

Note: When the StopWatch is set to count down (with a -symbol displayed). it will count down to zero. When the StopWatch reaches zero. you will hear a beep. and the StopWatch will begin counting forward (with a +sign displayed).

5-82

Stop Watch window opens, as shown in figure 5- l 03.

Counting time

Alarm time

Contrast agent button

Figure 5-103. The StopWatch window.

Counting Time and Alarm Time Features

The top line displays the counting time and the second line displays the alarm

time. The times are shown in hours, minutes, seconds, and hundredths of

seconds. To set a co·unting time or alarm time, click one of these displays and

enter the desired time.

The+ or- sign before the time indicates the direction in which the StopWatch

will run. When a+ sign is shown, the StopWatch counts forward. When a- sign

is shown, the StopWatch counts down, or backward. The +/- sign toggles. To

change the sign, click the sign.

Use the buttons below to operate the StopWatch:

Count-Starts the counting time.

Stop-Stops the counting time (this button appears when counting is in

progress).

Reset-Resets the displayed counting and alarm times to 00:00:00.00. Also, if

a patient is changed, counting and alarm times are reset.


Note: When using a contrast agent, you can also enter the name and volume of the agent in the Scan Control section of Scan Parameters in the Exam window. Refer to Chapter 6. "Scan Parameters ~ for more information about noting the use of contrast agents.

QS4-86717v3

Exam Window Scanning Functions 0 When the alarm time and the counting time match, you will hear a beep and the

alarm time symbol wi ll change in appearance to indicate that the alarm has gone

off, as shown in figure 5-104.

Alarm time symbol

Figure 5-104. A/ann symbol appearance when a/ann goes off.

Contrast Agent Feature

A contrast agent button is displayed next to the alarm time (figure 5- 1 05). You

can use this feature when the images need to indicate that contrast was used.

Figure 5-105. The contrast agent button.

Contrast agent button

When the contrast agent button is clicked, it is highlighted in yellow and the

counting time will start counting forward from zero. The system will inc lude

a letter "C," iJ1d icating contrast agent, on the images you obtain while the

button is activated. The StopWatch window must remain open for the contrast

indicator "C" to appear on the images. If the contrast agent button is clicked

again (turned oft) during a scan, the contrast indicator "C" will not appear on the

scanned images.

Changing the StopWatch Display

You can change the opacity/transparency of the StopWatch window using the

Options button. To display the Options button, click the right arrow button in

the upper right corner of the window, as shown in figure 5-106.

Figure 5·1 06. Click the right arrow button to display the Options button.

5. 83

0AS Is· MRI System Reference Manual 11141hU•tllqHI.

Note: The StopWatch window will automatically be displayed when the StopWatch is synchronized with a scan task.

5-84

The Options button is displayed. C lick it to open the Stop Watch Options

window. This window allows you to set the degree of opacity/transparency of

the StopWatch window, as shown in figure 5-107.

SropWa~h Op~ti~·o~ns~------~ Opacity 80 %

OK II Cancel I r Apply I

Figure 5-107. The Stop Watch Options window.

Move the slider to the right to increase the opacity or to the left to decrease the

opacity of the StopWatch window (the value is also displayed as a percentage).

An opacity va lue of l 00 percent makes the StopWatch window opaque; lower

values make the window more transparent. When finished, click OK.

Synchronizing the StopWatch With Scans

You may synchronize your scanning with the StopWatch window so that

counting begins when contrast scanning stat1s. On the ScanParameterList

window, set Sync. Stop Watch to ON, as shown in figure 5- l 08. The Stop Watch

will automatically begin counting when you start a scan in Normal Multi scan

mode, or when you stat1 the second scan set of dynamic contrast acqu isitions.

I 04498 Emml

Figure 5-108. Synchronizing the StopWatch with scans.


QS4-86717v3

Exam Window Scanning Functions 0 Interactive Scan Control (ISC)

The Interactive Scan Control ( ISC) function, used primarily in cardiac imaging,

gives the user the ability to change and update a scan position, sl ice plane, field

of view, etc. in rea l time during a fluoroscopic (Fiuoro) scan. Changes to scan

parameters are immediately reflected in the Fluoro viewport of the Exam window (figure 5-1 09). These scan parameter and image updates are achieved

without stopping and resta1ting the scan, which al lows the user to accurately, quickly, and more eas ily position the scan plane for optimal evaluation of

complex patient anatomy. Once the optimal scan plane is pos itioned using ISC,

the main scan sequence can be initiated.

In a typical ISC session, the pointer is moved over the slice line, which displays the rotation cursor and allows the slice angle to be changed. Positioning changes made here are immediately reflected in the Fluoro viewport, providing visual feedback for optimal evaluation.

Figure 5-109. ISC overview.

ISC is compatible with gated or non-gated scanning. Additionally, non-gated TSC scanning is dependent on the method selected for fluoroscopic parameter

updates. The currently-selected update method can be checked or changed from

the Scan System Setting window. To display the Scan System Setting window,

fo llow this procedure:

I. Click the System Settings icon on the Launcher toolbar (if the System Settings icon is not displayed in your Launcher Toolbar, refer to the Customizing Your Launcher Too/bar section of Chapter 3, System Overview,

in this manual for complete Launcher toolbar customization details).

5. 85


5-86

2. On the Scan System Setting window (figure 5-11 0), click tlhe Replace tab

to access the fluoroscopic parameter update method options.

3. Choose Use Update button to apply the parameter changes on ly when the

Update button is cl icked (the Update button is located at the bottom of the

Scan Parameters area on the Exam window). C hoose Not u se Update

button to automatically apply the parameter changes during a fluoroscopic

scan. The Not use Update button is the t·ecommended option.

~ Scan System Setting ~ P...-erCheck 14odej l ROiilioe]IS..:em Sta!U&.), ..,.,..,,.ion l Scan Remarino Tlroel Kev Stano I

~

Howto_Sc.n_«dlmo ~

Use~I>Uton

0 NoiUM ~e tu:lon

I a< I I Ooneel I I ~'<>~>~ 1

Figure 5-110. The Replace tab on the Scan System Setting window.

IfiSC is used with multi slice scanning, the image in the Fluoro viewport of the

Exam window will not update until all sljces have been acquired.

Because ISC is performed in the Flu01·o mode, you can use the Next and Save

buttons to move to the next job in the scan queue or to save images in the system

respectively. The Next and Save buttons are located at the bottom of the Scan

Parameters area.

When the Next button is cl icked and there are scan jobs in the queue, the current

ISC scan wi ll stop and the next queued scan will begin. If there are no scan jobs

in the queue when the Next button is clicked, the ISC scan will simply stop

running.


QS4-86717v3

Exam Window Scanning Functions 0 When the Save button is clicked and the ISC scan is running, the image in the

Fluoro viewport is saved to the Series area on the Exam window1• To load a

saved image into one of the viewports in the Exam window. click the Stop

button to stop the ISC scan and drag the image from the Series area to the

des ired viewport. When lSC scanning is restarted, parameter changes can again

be made to further " fine tune" slice angles, s lice position, etc .

. . ....... ___ .., ··--~ .. --- .. :-'-'-'-"---- ·-• '" MTC --- ... .......

•• -

-._ ... _, ·- ...

Figure 5-111. The Disk save list on the ScanParameterList window.

1 Provided that off is selected from the Disk save box in the Scan Control area

of the ScanParametcrList window (figure 5- 111 ). C licking ON rrom the

Disk save list saves all lSC (fluoro) images to the system. Clicking offfrom

the Disk save list only saves images to the system -.vhen the Save button is

c licked. The recommended Disk save list selection is off.

5·87


Note: If the Patient Table Information button is not visible on the Launcher too/bar. you can add it by right-clicking the Launcher too/bar and selecting Customize. Refer to the "Launcher Buttons" section in Chapter 3, "System Overview,·· for a detailed explanation of the Customize feature.

5-88

Patient Table Information Window

The Patient Table Information window (figure 5-112) displays the status

and position of the patient table. It can be used to assist with selection of the

optima l coi l mode in cases where a coil has two or more operational modes.

This window is also used when performing exams that invo lve multiple patient

table positions (for example, when using the PYA coil for peripheral vascular

angiography, or for VASC-FSE scann ing).

@ To access the window from the Launcher tool bar, c lick the Patient Table

Information Launcher button.

The Patient Table Information window opens, as shown in figure 5-112.

Patient Table lnfor-ion l!l f:l

Patient ID and Name - -2614.00 mm

_0 Coil Name Option r lcTL

Figure 5-112. The Patient Table Information window.

If you are using this window with coi ls that have two or more operational

modes, the following parameters are available:

P atient ID- Displays the patient's ID number in the top left box.

Patient Name- Displays the patient's name in the top right box.

Sta tus-Shows the current status of the patient table.

Depth-Displays a numerical va lue for the patient table's position in

millimeters, based on the distance that the table is moved into or out of the

gantry.

Coil Name- Displays the name of the coil.


QS4-86717v3

Exam Window Scanning Functions 0 Option-Opens the Patient Table Information Option window, as shown in

figure 5- 113. This window can be used for coi ls that have two or more modes. If

the Display a utomaticaUy check box is selected, the system wi II provide an

automatic notification of the optimal coi I mode once the coi I mode search is

complete.

PatientTallle~fcwmatD>~ian

Oisp~.oy lor Col mode sea<ch

Figure 5-113. The Patient Table Information Option window

Coil Mode- Displays the retrieved coil mode. lfrhe coi l can use two or more

modes (and the Display automatica Uy check box has been selected in the

Patient Table information O ption window), the optimal coil mode wi ll be

displayed (figure 5-1 14).

Patient Table~~ .. --... l!l i:l

lwxn )[Table Move

- Stapping(4u

- -226300 mm

Co11 Name Optoon

ICTL

Agure 5-114. The optimal coil mode is displayed.

5. 89


5-90

Picture display- Displays the patient table's direction of movement, w hich is

indicated by the green arrow, as shown in figure 5- 11 5.

~lnrn __________ ~l~lr~~~==~==========~ -Moving - -226400 mm lnner

Coil Name

lcTL Optm J Direction arrow

Coil Mode

poo.oo

left Richt

Figure 5-115. The patient table direction of movement display.

When using the Patient Table Information window with coils that have only

one mode but multiple stations (such as the PYA coil), the window provides

reference information. You can refer to the different settings displayed in the

Depth box, wh ich indicates patient table movement (in millimeters) into or out

of the gantry as it travels between stations.


chapter 5-exam window scanning functions€¦ · ai:-tme p1oro • oil 10454

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