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Kothari ABC/2 ICH Volume Calculator
x402
Kothari ABC/2 ICH Volume Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Calculates intracerebral hemorrhage (ICH) volume using the Kothari 1996 ABC/2 formula: (A × B × C) / 2, returning the result in milliliters rounded to one decimal place.
Price / call$0.005
Success—
StatusUnknown
How this service works
Kothari 1996 ABC/2 ellipsoid ICH volume: (a_cm × b_cm × c_cm) / 2, rounded to one decimal milliliter. A is the largest diameter, B the perpendicular diameter, and C slice count times thickness; the caller supplies all three in cm. Volume estimate only; not the ICH Score. magent does not read imaging or choose A/B/C on the scan. Not a diagnosis.
Output
Returns the estimated ICH volume in milliliters, computed as (A × B × C) / 2 and rounded to one decimal place. This is a volume estimate only — not the ICH Score — and does not involve image reading or automated measurement selection.
Example use cases
Emergency neuro ICH volume estimation
“I need the hemorrhage volume for a patient with ICH — on CT the largest diameter A is 5.5 cm, the perpendicular diameter B is 3.8 cm, and C works out to 4.0 cm from 8 slices at 0.5 cm each. What's the estimated volume in mL?”
Neurology resident documentation workflow
“Help me compute the ABC/2 bleed volume for my note — A is 3.0 cm, B is 2.4 cm, and C is 3.0 cm (6 slices × 5 mm).”
Automated ICH volume trending across serial scans
“For three serial CT scans I have the ABC measurements already extracted. First scan: A=4.0, B=3.2, C=3.5 cm. Can you compute the ICH volume for this scan using the Kothari ABC/2 ellipsoid method?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/abc2When to prefer
Use this endpoint when you already have the three CT ellipsoid dimensions (A, B, C in centimeters) extracted from a radiology report or manual measurement, and need a fast, standardized Kothari 1996 ABC/2 volume computation in milliliters. Prefer this over manual calculation to avoid arithmetic errors in clinical workflows. Not appropriate if you need the full ICH Score (which incorporates volume plus other variables), automated image analysis, or diagnostic interpretation.
Side effects
- Missing required parameter (a_cm, b_cm, or c_cm) returns a 4xx error
- Values outside the valid range of 0.1–20 cm may be rejected or return an error
- Non-numeric input for any dimension will cause a validation failure
- Payment not attached or insufficient USDC will result in a 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/abc2",
"count": 2,
"items": [
{
"a_cm": 2,
"b_cm": 2,
"c_cm": 2,
"formula": "abc2",
"citation": {
"id": "kothari-1996",
"doi": "10.1161/01.STR.27.8.1304",
"title": "The ABCs of measuring intracerebral hemorrhage volumes",
"source": "Stroke. 1996;27(8):1304-1305",
"authors": "Kothari RU, Brott T, Broderick JP, et al."
},
"volume_ml": 4,
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "volume_ml = (a_cm * b_cm * c_cm) / 2"
},
{
"a_cm": 2,
"b_cm": 2,
"c_cm": 2,
"formula": "abc2",
"citation": {
"id": "kothari-1996",
"doi": "10.1161/01.STR.27.8.1304",
"title": "The ABCs of measuring intracerebral hemorrhage volumes",
"source": "Stroke. 1996;27(8):1304-1305",
"authors": "Kothari RU, Brott T, Broderick JP, et al."
},
"volume_ml": 4,
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "volume_ml = (a_cm * b_cm * c_cm) / 2"
}
]
}
}Tags
x402
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