1. ADC Calculations Joshua Kim

2. I. Objective and Goals II. Current ADC Results III. Current Progress on MatLab Program Outline

3. Objective and Goals  Objective › To calculate ADC values for all patients  Goals › To study the pixel intensity variations with translation. › To calculate the combined effects of image statistical error with contour placement uncertainty. › To create a MatLab GUI program that can make the ADC analysis faster.

4. Current ADC Results (Meyers)

5. b = 0 b = 520 b = 850

6. MatLab Program  Problem: › Some lesions are very difficult to contour › Would like to study lesion pixel variation with translation. › Also: Want good organization of data and fast analysis

7.  MatLab: › User defined contours for b=0, 520 and 850. › Record coordinates (indices) of contour › Shift in 8 different directions by N pixels › Create ADC value plots as function of shift to study the pixel variations › Conclude effect of transcription uncertainty MatLab Program b = 0b = 520b = 850

8. Future Work  Complete transcription error component of MatLab  Write code for organizing data  Complete ADC calculations for all patients