Standardization of Multiparametric Prostate MR Imaging Using PI-RADS

Table 2

PI-RADS scoring system for T2WI—transition zone.

PI-RADS score	Criteria
1	Heterogeneous transition zone adenoma with well-defined margins: “organized chaos”
2	Areas of more homogeneous low signal intensity, however well-marginated, originating from the transition zone/BPH
3	Intermediate appearances not in categories 1/2 or 4/5
4	Areas of homogeneous low signal intensity, ill defined: “erased charcoal drawing sign”
5	Same as 4, but involving the anterior fibromuscular stroma sometimes extending into the anterior horn of the peripheral zone, usually lenticular or water-drop- shaped