New Orleans Head CT Rule (Haydel 2000)
New Orleans Head CT Rule (Haydel 2000). CT is indicated if any of seven findings: headache, vomiting, age over 60, drug or alcohol intoxication, short-term memory deficit (anterograde amnesia), physical evidence of trauma above the clavicles, or seizure. Published for GCS 15 minor head injury in adults; magent does not take GCS or examine the patient. Not a diagnosis, not the Canadian CT Head Rule, not PECARN, and not pediatric.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
285 msmedian answer time
$0.005listed price per call
$0.007price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/new_orleans_head
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 285 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age": 40,
"drug_or_alcohol_intoxication": false,
"headache": false,
"seizure": false,
"short_term_memory_deficit": false,
"trauma_above_clavicles": false,
"vomiting": false
},
{
"age": 40,
"drug_or_alcohol_intoxication": false,
"headache": false,
"seizure": false,
"short_term_memory_deficit": false,
"trauma_above_clavicles": false,
"vomiting": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"age": {
"description": "Age in years (18-120). Age >60 is a CT indication; 60 does not. The published rule is GCS 15 minor head injury in adults; magent does not take GCS.",
"type": "integer"
},
"drug_or_alcohol_intoxication": {
"description": "Drug or alcohol intoxication. true or false as assigned by the caller.",
"type": "boolean"
},
"headache": {
"description": "Headache. true or false as assigned by the caller.",
"type": "boolean"
},
"seizure": {
"description": "Seizure. true or false as assigned by the caller.",
"type": "boolean"
},
"short_term_memory_deficit": {
"description": "Deficit in short-term memory (anterograde amnesia). true or false as assigned by the caller.",
"type": "boolean"
},
"trauma_above_clavicles": {
"description": "Physical evidence of trauma above the clavicles. true or false as assigned by the caller.",
"type": "boolean"
},
"vomiting": {
"description": "Vomiting. true or false as assigned by the caller.",
"type": "boolean"
}
},
"required": [
"age",
"headache",
"vomiting",
"drug_or_alcohol_intoxication",
"short_term_memory_deficit",
"trauma_above_clavicles",
"seizure"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}