Table 3: PI-RADS scoring system for DWI.

PI-RADS score Criteria

1 No reduction in ADC compared to normal glandular tissue. No increase in signal intensity on any high -value images*
2 Diffuse hypersignal intensity on high -value images* with low ADC; no focal features, linear, triangular, or geographical features, allowed
3 Intermediate appearances not in categories 1/2 or 4/5
4 Focal area(s) of reduced ADC but isointense signal intensity on high -value images*
5 Focal area/mass of hypersignal intensity on the high -value images* with reduced ADC