ws04 vmat treatments verification with iba matrixx detector and op-imrt

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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4º Congresso da Sociedade Portuguesade Radioterapia Oncologia

  WITH IBA MATRIXX DETECTOR AND OP’IMRT 

Servicio Radiofísica. Hospital Universitario Virgen Rocío. Sevilla.

Depto. Fisiología Médica y Biofísica. Universidad de Sevilla.

España.

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CONTENT 

•• Introduction Introduction 

•• Verification Verification with with Matrixx and OP’IMRT Matrixx and OP’IMRT 

•• Initial Initial operations operations 

•• Normal Normal workflow workflow 

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INTRODUCTION: 

MATRIXX DETECTOR 

  4.5 mm 

Air-vented pixel ionization

chambers: φφφφ=4.5 mm, d=5 mm,

V=0.07 cm³

Fast readout down to 20 msec

7.62 mm

5 mm

Active area 24 cm x 24 cm

Spatial resolution: 7.62 x 7.62 mm

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M  MatriXX Detector 

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Verification with Matrixx and OP’IMRT 

VERIFICATION WORKFLOW

INITIAL OPERATIONS

  • reatment p an es gn n

• Plan export and recalculation inthe Phantom Matrixx+Multicube.

Planar dose calculation.• Detector and Multicube setup

• Scanning of Matrixx inCT

• Matrixx calibration

• Directional sensitivity

correction 

phantom

• Analysis of results : TPS vs Meas.

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Verification with Matrixx and OP’IMRT Initial Operations 1: Scanning of Matrixx in CT 

Scan matrixx position,

identical to the treatment

Verification

Images to TPS

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Verification with Matrixx and OP’IMRT Initial Operations 1: Scanning of Matrixx in CT 

Matrixx

and

u cu eTC images

acquired

Definition

of a QA

Phantom in

TPS

O

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Verification with Matrixx and OP’IMRT Initial Operations 2: Matrixx Calibration 

Dij = (M-B)ij ·NDW(60Co) · Kuni ij · Koff i,j · k pT · k User

Measurement

Bacground

Calibration factor andUniformity: (Production site)

Off-axis Calib factor

P,T correction

Detector factor

Dij = Absolute dose in chamber/pixel “ij”

V ifi i i h M i d OP’IMRT

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Verification with Matrixx and OP’IMRT Initial Operations 2: Matrixx c alibration 

KuserIrradiate with 10x10 cm field, with known dose at chambers plane

V ifi ti ith M t i d OP’IMRT

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Verification with Matrixx and OP’IMRT Initial Operations 2: Matrixx Calibration 

V ifi ti ith M t i d OP’IMRT

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Verification with Matrixx and OP’IMRT Initial Operations 2: Matrixx Calibration 

Koff-axis calibration factor

Irradiate with field 27x27, 100 mu

V ifi ti ith M t i d OP’IMRT

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Verification with Matrixx and OP’IMRT Initial Operations 2: Matrixx Calibration 

Koff-axis calibration factor

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Initial Operations 3: Angular dependence correction 

•Irradiate from -90º to +90º gantry angle CW :

•Interval 5º -90º to -5º and + 5º to + 90º 

•Interval 1º -5º to + 5º•Field: 10x10 cm

•MU = 100

•Compare TPS isocenter dose with average

dose measured in 4 central pixels

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP’IMRT Initial Operations 3: Angular dependence correction 

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Initial Operations 3: Angular dependence correction 

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Initial Operations 3: Angular dependence correction 

Angular correction factor

 Nij = Dmeas

(0)/ Dref 

(0) ij =

Generate a table with Cij in csv format and

import it to OP’IMRT

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT WORKFLOW 

a. Clinical VMAT plan design in TPS

b. Plan export and recalculation in thePhantom Matrixx+Multicube

c. Detector and Multicube setupd. Treatment verification with OP’MRT

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Plan export and recalculation in the Phantom Matrixx+Multicube (1-5) 

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Plan export and recalculation in the Phantom Matrixx+Multicube  (3-5) 

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Plan export and recalculation in the Phantom Matrixx+Multicube (4-5) 

1. Verification with Matrixx and OP’IMRT

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1. Verification with Matrixx and OP IMRT Plan export and recalculation in the Phantom Matrixx+Multicube (5-5)

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT WORKFLOW 

a. Clinical plan design in TPS

b. Plan export and recalculation in thePhantom Matrixx+Multicube

c. Detector and Multicube setupd. Treatment verification with OP’MRT

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Detector and Multicube setup (1-4)

no

yes

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Detector and Multicube setup (2-4)

Align lasers

with marks inMCube

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Detector and Multicube setup (3-4)

1. Sensor angle calibration• Gantry 0º

• Gantry 90º

2. Matrixx Preirradiation:

• Field 27 x 27 cm• 600 MU 10 Gy

 • antry at 0• Mode: “online”, 500 ms

3. Background substraction

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Matrixx preirradiation (4-4)

Verification with Matrixx and OP’IMRT 

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WORKFLOW 

a. Clinical plan design in TPS

b. Plan recalculation and export to Phamtom(Matrixx+Multicube) and Mosaiq

c. Detector and Multicube setupd. Treatment verification with OP’MRT

Verification with Matrixx and OP’IMRT 

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Treatment verification with OP’MRT (1-12)

Parameters selection:

Meas. Mode: MOVIE

Samp. Time: 300 ms

Nºimages: 1000

Verification with Matrixx and OP’IMRT 

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Treatment verification with OP’MRT (1-13)

Verification with Matrixx and OP’IMRT 

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Treatment verification with OP’MRT (2-13)

Verification with Matrixx and OP’IMRT 

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Treatment verification with OP’MRT (3-13)

Verification with Matrixx and OP’IMRT

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Verification with Matrixx and OP IMRT Treatment verification with OP’MRT  (4-13)

Verification with Matrixx and OP’IMRT 

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Treatment verification with OP’MRT (5-13)

Verification with Matrixx and OP’IMRT 

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Treatment verification with OP’MRT (6-13)

Measurements7.62 1 mm resol

Verification with Matrixx and OP’IMRT T ifi i i h OP’MRT (7 13)

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Treatment verification with OP’MRT (7-13)

Verification with Matrixx and OP’IMRT T t t ifi ti ith OP’MRT (8 13)

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Treatment verification with OP’MRT (8-13)

Verification with Matrixx and OP’IMRT T t t ifi ti ith OP’MRT (9 13)

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Treatment verification with OP’MRT (9-13)

Verification with Matrixx and OP’IMRT 

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Treatment verification with OP’MRT (10-13)

Measurements

TPS Planar dose Gamma

3% / 3mm

Verification with Matrixx and OP’IMRT 

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Treatment verification with OP’MRT (11-13)

Verification with Matrixx and OP’IMRT f O R

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Treatment verification with OP’MRT (12-13)

Verification with Matrixx and OP’IMRT T ifi i i h OP’MRT (13 13)

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Treatment verification with OP’MRT (13-13)

If regions with out of tolerance gamma levels:

- Are there in PTV, OAR’s or other places?- Have that regions infra or over doses?

Can the linac execute the VMAT treatment asordered by the TPS?

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Moito obrigado

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4º Congressoda Sociedade Portuguesa

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gde Radioterapia Oncologia

 WITH 

IBA MATRIXX DETECTOR and COMPASS 

Juan Carlos Mateos

Servicio Radiofísica.HU Virgen Rocío.

 n vers a e ev a.

CONTENT

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CONTENT 

1. Introduction: Verification methods

2. Plan export TPS to Mosaiq and OP’IMRT orCOMPASS

3. Comisionado detector4. Información suministrada por el sistema

5. Análisis de la información

COMPASS- the total concept

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Transmission Detector Beam model Dose engine

DetectorDetector

ComissioningComissioning

BeamBeam

ComissioningComissioning

LINAC QALINAC QA MLC QAMLC QA Online SurvOnline Surv2D Plan eval2D Plan eval

Dose trackingDose tracking

Patient 3D dosPatient 3D dos

Plan adaptationPlan adaptation

Workflow

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Verify, visualize, validate

2. Colocación del MatriXX 

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Sensor de ángulos

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Sensor de ángulos 

3. Exportación del plan a Mosaiq y Compass

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Compass 

Para exportar: FILE→ Export→ Dicom (en Pinnacle)

 − ,

seleccionar RT Plans completo (Pinnacle)

Destination: IMPAC_DCM_SCP

− A Compass,

se ecc onar, ans, tructure, ose y

images (Pinnacle) Destination: COMPASS

Ojo: conectar cable de red a PC, activar Compass y pulsar

en Patient 3D Dosimetry→ Importar

4 Comisionado del detector

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4. Comisionado del detector 

Calentar acelerador,

− Modo servicio, 27x27 cm, 200 um, 120 um/min

Conectar MatriXX a PC

Seguir instrucciones para verificar rotación,offsetts y dosis absoluta (100 um, campo 10x10)

  na , pu sar en cono rat n→ com s onar

el detector

4 Comisionado del detector

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4. Comisionado del detector 

Medir Background y Pre-irradiar

Irradiar el MatriXX con tres campos,(10, 15 y 20cm), con 50 um a 500 um/min

Colocar dos láminas de agua sólida de 1 cm Seguir instrucciones para verificar rotación,

,

Al final, pulsar en icono BD ratón→ comisionar

el detector

4. Comisionado del detector 

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4. Comisionado del detector 

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4. Comisionado del detector 

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4. Comisionado del detector 

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4. Comisionado del detector 

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4. Comisionado del detector 

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5. Información suministrada (respuesta) 

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( p )

Respuestade las cámaras

 Measured response

Datos-máquina

 +

Modelo Pinnacle

Predicted response

5. Información suministrada (dosis) 

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Datos-Máquina

+

TPS Dose

Datos-Máquina

+Modelo Compass

Computed Dose

 espues a e ec or

+Modelo Compass

 Indirectly Measured Dose

5. Información suministrada (otras herramientas) 

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Histo ramas Dosis Volumen 

Análisis Gamma TPS vs Indirectly Measured Dose

Diferencias de dosis TPS vs Indirectly Measured Dose

Diferencias de dosis TPS vs Computed Dose

Análisis Gamma TPS vs Computed Dose

6. Análisis de la información Medida de la respuesta 

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6. Análisis de la información Medida de la respuesta 

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6. Análisis de la información 2D Diferencia Dosis Pinnacle e Indirecta 

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6. Análisis de la información 2D Gamma Pinnacle-Dosis Indirecta 

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6. Análisis de la información 3D Dosis Pinnacle 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información 3D Dosis Indirecta 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información 3D Diferencia Pinnacle-Dosis Indirecta 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información 3D Gamma Pinnacle-Dosis Indirecta 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información Estadística e HDV Pinnacle y Dosis Indirecta 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información 2D Diferencia Dosis Pinnacle y Computed Dose 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información 2D Gamma Dosis Pinnacle y Computed Dose 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información 3D Dosis Pinnacle 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información 3D Computed Dose 

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6. Análisis de la información 3D Diferencia Pinnacle y Computed Dose 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información 3D Gamma Pinnacle y Computed Dose 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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6. Análisis de la información Estadística e HDV Pinnacle y Computed Dose 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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Reports 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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Hoja 1

Reports 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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Hoja 2 

Reports 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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Ho a  

Reports 

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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Hoja 4 

Detector de Transmisión

8/7/2019 WS04 VMAT Treatments Verification with Iba Matrixx Detector and OP-IMRT

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