Standardization of Multiparametric Prostate MR Imaging Using PI-RADS

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