Fig. 4.
Representative MR images of a tumor that had a midtreatment PR (patient 16, a 55-year-old man). (A, B) Pretreatment scans; (C, D) midtreatment scans. The T2w, T1w-Gd, and DW (b = 800 mm/s2) images (A, C) were windowed to have similar image contrast, whereas ADC and IVIM parametric maps (B, D) were scaled according to the scale bars shown below the images (the scales used for midtreatment images were the same as those used for preatment images). The primary mass is indicated by arrows. Logarithmic plots of biexponential signal decay in the primary tumor are shown on the right in panels B and D.