💧 Bladder VI-RADS (mpMRI Muscle Invasion)
Compute the bladder VI-RADS category (1–5) from T2, DWI and DCE mpMRI scores with the dominant-sequence rule to assess muscle invasion. Instant, browser-side.
Bladder VI-RADS (mpMRI Muscle Invasion)
T2WI structural category (SC) score
DWI/ADC category score
DCE dynamic-enhancement category score
DWI image quality
When to use
Score bladder-cancer mpMRI to predict detrusor (muscle) invasion before TURBT/cystectomy decisions.
How it works
T2 (SC), DWI and DCE each scored 1–5; DWI is the dominant functional sequence (DCE-dominant when DWI is poor); overall 1 (highly unlikely) to 5 (invasion with extravesical extension).
Key points
- VI-RADS ≥ 3 suggests possible muscle invasion (≥ 4 more specific).
- DWI is dominant unless image quality is poor, when DCE takes over.
- Final staging still needs cystoscopy and pathology (TURBT/re-TURBT).
- VI-RADS ≤ 2 leans non-muscle-invasive bladder cancer.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.