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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