Guideline decision tool · Gastroenterology
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CT Severity Index (CTSI, Balthazar) — free guideline decision tool
Grade acute pancreatitis severity on CT with the Balthazar CT Severity Index.
Open guideline tool →Computed locally — no data uploaded. For licensed clinicians.
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Guideline-based
Implements the decision logic from published clinical guidelines.
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Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
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Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Common questions
What does CT Severity Index (CTSI, Balthazar) do?
Assess prognosis in acute pancreatitis from imaging.
How is the result calculated?
CTSI = Balthazar grade (A–E = 0–4) + necrosis extent (0/2/4/6), total 0–10. 0–3 mild, 4–6 moderate, 7–10 severe.
Is this a substitute for clinical judgement?
No. All results are decision-support only, for licensed clinicians. They must be individualized to the whole patient and the latest guideline version.
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Run CT Severity Index (CTSI, Balthazar) now
Grade acute pancreatitis severity on CT with the Balthazar CT Severity Index.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
Related guideline tools
For use by licensed clinicians and clinical researchers. Computed locally in your browser — no data is uploaded. Not a substitute for clinical judgement.