Table 1: PI-RADS scoring system for T2WI—peripheral zone.

PI-RADS score Criteria

1 Uniform high signal intensity
2 Linear, wedge-shaped, or geographic areas of lower signal intensity, usually not well demarcated
3 Intermediate appearances not in categories 1/2 or 4/5
4 Discrete, homogeneous low signal focus/mass confined to the prostate
5 Discrete, homogeneous low signal intensity focus with extracapsular extension/invasive behavior or mass effect on the capsule (bulging), or broad (>1.5 cm) contact with the surface