The Prediction Using Diffusion MRI of the Response Evaluation in BRPC in NAT.

Diffusion MRI Patients undergo MRI within 3 weeks before start of neoadjuvant therapy/ 5 weeks after the last dose. The setting of MRI scans for b-values is 0, 50, 1000 s/mm2. The same MRI (the MRI system/scanner Intera Achieva 3.0T from Philips Medical Systems) in the independent institution is used for all patients analyzed on this study. The region of interest is determined by consensus between two experienced MR radiologists in a largest diameter based on images of abdominal CT scans avoiding the vascular area on the image of ADC map. The mean ADC values for each tumor are automatically calculated on the image of ADC map using a tomographic software program.