CT Severity Index (Balthazar, pancreatitis)
CT Severity Index (Balthazar 1990): contrast-CT grade A-E (0-4) + pancreatic-necrosis score (0/2/4/6); total 0-10, 0-3 mild, 4-6 moderate, 7-10 severe acute pancreatitis.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Balthazar CT grade
- 4
- Pancreatic necrosis
- 6
Result: CTSI 10/10: severe acute pancreatitis (0-3 mild, 4-6 moderate, 7-10 severe).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Bands
- 0-3 mild, 4-6 moderate, 7-10 severe.
What you enter
- Balthazar CT grade (A=0 … E=4)
- Pancreatic necrosis (0 none, 2 ≤ 30%, 4 30-50%, 6 > 50%)
How this is calculated
- Components
- CT grade A-E (0-4) + pancreatic necrosis (none 0, <= 30% 2, 30-50% 4, > 50% 6); total 0-10.
Balthazar EJ, Robinson DL, Megibow AJ, Ranson JH. Acute pancreatitis: value of CT in establishing prognosis. Radiology. 1990;174(2):331-336. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.