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Fisher 1980 CT Grade Lookup for Subarachnoid Hemorrhage
x402
Fisher 1980 CT Grade Lookup for Subarachnoid Hemorrhage 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).
Returns the published Fisher 1980 original CT group description and vasospasm context for a caller-assigned SAH grade (1–4).
Price / call$0.005
Success—
StatusUnknown
How this service works
Fisher 1980 original CT groups 1-4 for subarachnoid hemorrhage as assigned from CT by the caller. Returns the published group and description. Group 3 (thick SAH) was the high-vasospasm group; group 4 is ICH/IVH without thick SAH, not a worse grade than 3. Not modified Fisher 2006. Not a diagnosis; magent does not read the CT.
Output
Returns the Fisher 1980 original CT group number with its published label and descriptive text, including a note on vasospasm relevance (e.g., group 3 as the high-vasospasm group) and clarification that group 4 (ICH/IVH without thick SAH) is not considered a worse vasospasm grade than group 3.
Example use cases
SAH vasospasm risk stratification
“My patient has a subarachnoid hemorrhage and the CT was assigned Fisher grade 3 by the radiologist. What does the original Fisher 1980 classification say about that group and its vasospasm risk?”
Clinical documentation reference
“I'm documenting an SAH case and need the official Fisher 1980 group 2 description — can you retrieve the published text for that grade?”
Neurocritical care education
“Can you show me what Fisher CT group 4 means in the original 1980 classification — I want to confirm it's the ICH/IVH group and understand how it compares to group 3 for vasospasm?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/fisherWhen to prefer
Use this endpoint when you need to look up the original Fisher 1980 CT classification for subarachnoid hemorrhage by group number (1–4), specifically when you need the published description and vasospasm context. Prefer this over manual reference when building clinical decision support tools or automating SAH documentation. Do not use this for the modified Fisher scale (Frontera 2006) or any AI-based CT interpretation — the caller must assign the grade from their own CT read.
Side effects
- Grade outside 1–4 integer range returns an error or no match
- Missing required 'grade' query parameter returns a 400 or validation error
- Non-integer value for grade results in a schema validation error
- Service unavailable returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/fisher",
"count": 2,
"items": [
{
"grade": 1,
"score": 1,
"formula": "fisher",
"citation": {
"id": "fisher-1980",
"doi": "10.1227/00006123-198001000-00001",
"pmid": "7354892",
"title": "Relation of cerebral vasospasm to subarachnoid hemorrhage visualized by computerized tomographic scanning",
"source": "Neurosurgery. 1980;6(1):1-9",
"authors": "Fisher CM, Kistler JP, Davis JM"
},
"max_score": 4,
"components": [
{
"factor": "grade",
"points": 1,
"present": true
}
],
"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.",
"description": "No blood detected",
"formula_expression": "Fisher 1980 original CT group 1-4 as assigned by the caller"
},
{
"grade": 1,
"score": 1,
"formula": "fisher",
"citation": {
"id": "fisher-1980",
"doi": "10.1227/00006123-198001000-00001",
"pmid": "7354892",
"title": "Relation of cerebral vasospasm to subarachnoid hemorrhage visualized by computerized tomographic scanning",
"source": "Neurosurgery. 1980;6(1):1-9",
"authors": "Fisher CM, Kistler JP, Davis JM"
},
"max_score": 4,
"components": [
{
"factor": "grade",
"points": 1,
"present": true
}
],
"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.",
"description": "No blood detected",
"formula_expression": "Fisher 1980 original CT group 1-4 as assigned by the caller"
}
]
}
}Tags
x402
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