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Fig. 3B —Definite prostate cancer seen on apparent diffusion coefficient
(ADC) map but poorly seen on T2 images in 66-year-old man. Prostate-specific
antigen was 3.2 ng/mL and Gleason score was 7 (3 + 4). ADC map calculated from
diffusion-weighted images at b values of 0 and 600 s/mm2 shown at
window width of 1,650 x 10-6 mm2/s and level of
1,675 x 10-6 mm2/s shows focal area of decreased
signal corresponding to one of two areas seen on T2 images in left
posterolateral peripheral zone (arrow). This area was characterized
as 4, definite cancer.
