Fig. 2.

65-year-old male patient wth a ductal adenocarcinoma at the pancreatic tail (same patient as in Fig. 1). A–H, Axial DWI images with b-values from 0 A to 1000 s/mm² H show restricted diffusion of the tumour (arrow) compared to the adjacent parenchyma. Due to the high number of averages obtained (5), the signal-to-noise ratio in the high b-value images was acceptable (SNR_tumour = 8; SNR_parenchyma = 4). I, Axial multidector CT (MDCT) image shows the tumour as a relatively well-demarcated hypovascular area. For optimal ROI positioning in tumour (continuous line) and in non-tumorous parenchyma (dashed line), both MDCT I and T2-weighted HASTE images (not shown) were used in conjuction with DWI images A–H in order to compensate for the inherent low resolution of DWI images.