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Table 2 PIRADS2 scoring system using DWI for PZ lesions and T2-weighted for TZ lesions

From: Can mean ADC value and ADC ratio of benign prostate tissue to prostate cancer assist in the prediction of clinically significant prostate cancer within the PI-RADSv2 scoring system?

  Reader 1 No of cases Reader 2 No of cases
PIRADS-score (DW finding in PZ an TZ lesions)
 1 No abnormality (i.e., normal) on ADC and high b value DWI 0 0
 2 Indistinct hypointense area on ADC map 7 8
 3 Focal moderate diffusion restriction with focal mildly/moderately hypointense on ADC and isointense/mildly hyperintense on high b value DWI 9 6
 4 Focal marked diffusion restriction with markedly hypointense on ADC and markedly hyperintense on high b value DWI; < 1.5 cm in greatest dimension 26 25
 5 Same as 4 but ≥ 1.5 cm in greatest dimension or definite extraprostatic extension/invasive behavior 20 23
PIRADS-score (T2W finding for TZ lesions)
 1 Homogeneous intermediate signal intensity (normal 0 0
 2 Circumscribed hypointense or heterogeneous encapsulated nodule(s) (BPH) 1 1
 3 Heterogeneous signal intensity with obscured margins Includes others that do not qualify as 2, 4, or 5 1 2
 4 Lenticular or non-circumscribed, homogeneous, moderately hypointense, and < 1.5 cm in greatest dimension 3 2
 5 Same as 4, but ≥ 1.5 cm in greatest dimension or definite extraprostatic extension/invasive behavior 1 1