Bladder VI-RADS (mpMRI Muscle Invasion) — free guideline decision tool
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.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| T2WI structural category (SC) score | 1 |
|---|---|
| DWI/ADC category score | 1 |
| DCE dynamic-enhancement category score | 1 |
| DWI image quality | Good (DWI dominant) |
→VI-RADSVI-RADS 1
- VI-RADS：VI-RADS 1: Muscle invasion highly unlikely
- Basis：Dominant sequence DWI = 1; T2 (SC) = 1, DWI = 1, DCE = 1 (T2 for first-pass/structural assessment, DWI is the dominant functional sequence, DCE dominant when DWI is poor)
- Muscle invasion：VI-RADS ≤ 2: low likelihood of muscle invasion, leans non-muscle-invasive
| T2WI structural category (SC) score | 5 |
|---|---|
| DWI/ADC category score | 5 |
| DCE dynamic-enhancement category score | 5 |
| DWI image quality | Poor (DCE dominant) |
→VI-RADSVI-RADS 5
- VI-RADS：VI-RADS 5: Muscle invasion very likely with extravesical extension (perivesical fat invasion)
- Basis：Dominant sequence DCE (DCE-dominant when DWI quality is poor) = 5; T2 (SC) = 5, DWI = 5, DCE = 5 (T2 for first-pass/structural assessment, DWI is the dominant functional sequence, DCE dominant when DWI is poor)
- Muscle invasion：VI-RADS ≥ 3: muscle invasion possible (≥ 3 highly sensitive, ≥ 4 more specific); urology/multidisciplinary assessment recommended
Common questions
What is 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.
How is Bladder VI-RADS (mpMRI Muscle Invasion) calculated? What is the core formula?
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).
When is Bladder VI-RADS (mpMRI Muscle Invasion) used?
Score bladder-cancer mpMRI to predict detrusor (muscle) invasion before TURBT/cystectomy decisions.
What are the key clinical points for Bladder VI-RADS (mpMRI Muscle Invasion)?
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.
What are the limits and cautions when using Bladder VI-RADS (mpMRI Muscle Invasion)?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
How is Bladder VI-RADS (mpMRI Muscle Invasion) calculated in practice? Can you show a worked example?
Inputs: T2WI structural category (SC) score 1, DWI/ADC category score 1, DCE dynamic-enhancement category score 1, DWI image quality Good (DWI dominant) → Result: VI-RADS VI-RADS 1（VI-RADS: VI-RADS 1: Muscle invasion highly unlikely, Basis: Dominant sequence DWI = 1; T2 (SC) = 1, DWI = 1, DCE = 1 (T2 for first-pass/structural assessment, DWI is the dominant functional sequence, DCE dominant when DWI is poor), Muscle invasion: VI-RADS ≤ 2: low likelihood of muscle invasion, leans non-muscle-invasive） Inputs: T2WI structural category (SC) score 5, DWI/ADC category score 5, DCE dynamic-enhancement category score 5, DWI image quality Poor (DCE dominant) → Result: VI-RADS VI-RADS 5（VI-RADS: VI-RADS 5: Muscle invasion very likely with extravesical extension (perivesical fat invasion), Basis: Dominant sequence DCE (DCE-dominant when DWI quality is poor) = 5; T2 (SC) = 5, DWI = 5, DCE = 5 (T2 for first-pass/structural assessment, DWI is the dominant functional sequence, DCE dominant when DWI is poor), Muscle invasion: VI-RADS ≥ 3: muscle invasion possible (≥ 3 highly sensitive, ≥ 4 more specific); urology/multidisciplinary assessment recommended）
Run Bladder VI-RADS (mpMRI Muscle Invasion) now
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.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.