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. Author manuscript; available in PMC: 2019 Apr 16.
Published in final edited form as: Eur Urol. 2015 Oct 1;69(1):16–40. doi: 10.1016/j.eururo.2015.08.052

Table 7 –

PI-RADS Assessment for DWI for both PZ and TZ

Score Peripheral Zone (PZ) or Transition Zone (TZ)
1 No abnormality (i.e., normal) on ADC and high b-value DWI
2 Indistinct hypointense on ADC
3 Focal mildly/moderately hypointense on ADC and isointense/ mildly hyperintense on high b-value DWI.
4 Focal markedly hypontense on ADC and markedly hyperintense on high b-value DWI; <1.5 cm in greatest dimension
5 Same as 4 but ≥1.5cm in greatest dimension or definite extraprostatic extension/invasive behavior