🔬 Prostate PI-RADS v2.1 Score
Compute the prostate PI-RADS v2.1 assessment category by zone using the dominant sequence and upgrade rules, with management. Instant, browser-side.
Prostate PI-RADS v2.1 Score
Lesion zone
DWI/ADC score
T2WI score
DCE dynamic enhancement
When to use
Score a prostate mpMRI lesion and decide on MRI-targeted biopsy.
How it works
PZ is DWI-dominant (DWI = 3 upgrades to 4 with positive DCE); TZ is T2-dominant (T2 = 2 + DWI ≥ 4 → 3, T2 = 3 + DWI = 5 → 4). Categories 1–5.
Key points
- DCE only arbitrates the peripheral-zone DWI-3 lesion.
- PI-RADS 1–2 carry low likelihood of clinically significant cancer.
- PI-RADS 3 is equivocal — PSA density (≥ 0.15) favours biopsy.
- PI-RADS 4–5 warrant MRI-targeted biopsy.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.