Liver LI-RADS (CT/MRI HCC) Category — free guideline decision tool
Compute the liver LI-RADS category (LR-3/4/5) from at-risk status, size and major features, with management. 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.
| At high risk for HCC (cirrhosis / chronic HBV / prior HCC) | Yes |
|---|---|
| Lesion size | 15 mm |
| Non-rim arterial-phase hyper-enhancement (APHE) | Yes |
| Non-peripheral washout | Yes |
| Enhancing capsule | Yes |
| Threshold growth (≥ 50% / ≤ 6 months) | Yes |
→CategoryLR-5
- Category：LR-5 (definite HCC)
- Read：Non-rim APHE present, size 15 mm, 3 additional major feature(s) (non-peripheral washout ✓, enhancing capsule ✓, threshold growth ✓)
- Management：Definite HCC: non-invasive imaging diagnosis without biopsy; multidisciplinary HCC staging and treatment (resection/ablation/transplant/transarterial/systemic)
| At high risk for HCC (cirrhosis / chronic HBV / prior HCC) | No |
|---|---|
| Lesion size | 15 mm |
| Non-rim arterial-phase hyper-enhancement (APHE) | No |
| Non-peripheral washout | No |
| Enhancing capsule | No |
| Threshold growth (≥ 50% / ≤ 6 months) | No |
→ApplicabilityLI-RADS not applicable
- Eligible population：Diagnostic CT/MRI LI-RADS applies only to patients at high risk for HCC: cirrhosis, chronic HBV, or current/prior HCC; not for age < 18, no risk factors, or cirrhosis from congenital hepatic fibrosis or vascular causes
- Advice：Evaluate liver lesions in non-at-risk patients along a general liver-lesion diagnostic pathway
- Basis：ACR LI-RADS v2018 CT/MRI diagnosis
Common questions
What is Liver LI-RADS (CT/MRI HCC) Category?
Compute the liver LI-RADS category (LR-3/4/5) from at-risk status, size and major features, with management. Instant, browser-side.
How is Liver LI-RADS (CT/MRI HCC) Category calculated? What is the core formula?
Major features — non-rim APHE, size, non-peripheral washout, enhancing capsule, threshold growth (≥ 50%/≤ 6 mo) — combine to LR-3/4/5. 10–19 mm + APHE + washout or threshold growth = LR-5.
When is Liver LI-RADS (CT/MRI HCC) Category used?
Categorise an observation on diagnostic CT/MRI in patients at high risk for HCC.
What are the key clinical points for Liver LI-RADS (CT/MRI HCC) Category?
LI-RADS applies only to patients at high risk for HCC (cirrhosis, chronic HBV, prior HCC). LR-5 allows non-invasive HCC diagnosis without biopsy. LR-M (non-HCC malignancy) and LR-TIV (venous invasion) are adjudicated separately. Capsule alone vs washout/threshold-growth changes the category in the 10–19 mm + APHE band.
What are the limits and cautions when using Liver LI-RADS (CT/MRI HCC) Category?
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 Liver LI-RADS (CT/MRI HCC) Category calculated in practice? Can you show a worked example?
Inputs: At high risk for HCC (cirrhosis / chronic HBV / prior HCC) Yes, Lesion size 15 mm, Non-rim arterial-phase hyper-enhancement (APHE) Yes, Non-peripheral washout Yes, Enhancing capsule Yes, Threshold growth (≥ 50% / ≤ 6 months) Yes → Result: Category LR-5（Category: LR-5 (definite HCC), Read: Non-rim APHE present, size 15 mm, 3 additional major feature(s) (non-peripheral washout ✓, enhancing capsule ✓, threshold growth ✓), Management: Definite HCC: non-invasive imaging diagnosis without biopsy; multidisciplinary HCC staging and treatment (resection/ablation/transplant/transarterial/systemic)） Inputs: At high risk for HCC (cirrhosis / chronic HBV / prior HCC) No, Lesion size 15 mm, Non-rim arterial-phase hyper-enhancement (APHE) No, Non-peripheral washout No, Enhancing capsule No, Threshold growth (≥ 50% / ≤ 6 months) No → Result: Applicability LI-RADS not applicable（Eligible population: Diagnostic CT/MRI LI-RADS applies only to patients at high risk for HCC: cirrhosis, chronic HBV, or current/prior HCC; not for age < 18, no risk factors, or cirrhosis from congenital hepatic fibrosis or vascular causes, Advice: Evaluate liver lesions in non-at-risk patients along a general liver-lesion diagnostic pathway, Basis: ACR LI-RADS v2018 CT/MRI diagnosis）
Run Liver LI-RADS (CT/MRI HCC) Category now
Compute the liver LI-RADS category (LR-3/4/5) from at-risk status, size and major features, with management. Instant, browser-side.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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