printed by plagiocephaly is a condition characterized by an asymmetrical distortion (flattening of...

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Plagiocephaly is a condition characterized by an asymmetrical distortion (flattening of one side) of the skull.• Common in newborn babies, as a result of intrauterine

environment or infant positioning after birth• Nearly 70% of all children will be screened within the

24 months of birth correlating to ~7500 screenings per day

• Systonic Plagiocephaly (Premature closure of coronal structure) prevalence rate is 1/1000 babies. Requires extensive treatment such as a helmet (see below)

• Non- systonic Plagiocephaly prevalence rate is 1/300. May require either simple or extensive treatment.

• Current measurement techniques use plastic calipers or similar physical methods

Experimental Design: 10 people are given instructions on how to use the application. Each person is given a standardized photo with marked points. Application is tested 5 times by each person at 5 ratios designated by points. This is done to test the accuracy of iPhone touch screen using our markers and photo.

• Robinson, Shenandoah, and Mark Proctor. "Diagnosis and Management of Deformational Plagiocephaly." Journal of Neurosurgery: Pediatrics 3.4 (2009): 284-95. Print.

• Bowman, Robin M. "Plagiocephaly." Pediatric Neurosurgery 32.5 (2000): 276. Print.• "Plagiocephaly in the News: 2009." Plagiocephaly Information Web. Web. 12 Apr. 2011.

<http://www.plagiocephaly.info/news/2009.htm>.• "Plagiocephaly." Wikipedia, the Free Encyclopedia. Web. 12 Apr. 2011.

<http://en.wikipedia.org/wiki/Plagiocephaly>.• Robinson, Shenandoah, and Mark Proctor. "Diagnosis and Management of Deformational

Plagiocephaly." Journal of Neurosurgery: Pediatrics 3.4 (2009): 284-95. Print.• Turk, Andrew E., Joseph G. McCarthy, Charles H. M. Thome, and Jeffrey H. Wisoff. "The

'Back to Sleep Campaign' and Deformational Plagiocephaly." Journal of Craniofacial Surgery 7.1 (1996): 12-18. Print.

• The manual version of the application is functional.• The results are displayed above with an average of

1% error.• The automatic version of the application with Edge

detection and "snap to" features are the next step.

PROBLEM STATEMENT VERIFICATION AND RESULTS

CONCLUSIONS

BIBLIOGRAPHY

DESIGN CRITERIA

User Requirements:• Application must be easy to use for doctors and

parents with minimal training• Measurement process must be safe (no risk) for

the childSystem Requirements:• Image measurement technique results in at least

1mm precision• Application calculates diagonal ratio and

midline/ear-line angle • Memory management meets App Store

requirements• Application should be approved for sale in App

Store

Length A (cm)

LengthB (cm) Ratio Results

Percent Error

14 14 1 0.99731 0.27%13.3 14 0.95 0.94128 0.92%12.6 14 0.9 0.8834 1.84%11.9 14 0.85 0.84107 1.05%11.2 14 0.8 0.79119 1.10%

IPHONE 4 HARDWARE SPECIFICATIONS

iPhone 4 Hardware Specifications

• 94% of physicians are now using smart phones• ~31,000 (44%) use iPhone • At $6 and 10% adoption rate revenue= $18,600

MARKET LANDSCAPE

Wait for user to choose “Load Image or “Camera”

Show Photo Library and wait for user selection

Load camera application and wait for user to take photo

1) Ratio Mode – user places white markers on midline and blue markers on longest diagonal

2) User pushes “Calc. Ratio” button then places adjusted white markers to edge of head

3) User pushes “Calc. Ratio” button

A) Angle Mode – user places white markers on midline and blue markers on ear-line

B) User pushes “Calc. Angle” button

Touchscreen 960x640 resolution at 326ppi 3.5inch (diagonal) screen

Processor/Memory 800MHz A4 processor 512MB RAM

Camera 5-megapixel still camera

APPLICATION PROGRAM FLOW

12

3

A

B