PECARN pediatric head CT (Kuppermann 2009)
PECARN pediatric head CT (Kuppermann 2009). Two age trees (under 2 vs 2-17). High if any age-applicable high-risk factor (GCS <=14 or altered mental status in both; palpable skull fracture if under 2; signs of basilar skull fracture if 2 or older), else intermediate if any age-applicable intermediate factor, else low. CT recommended only when high. Not a diagnosis. Not Canadian CT Head, CATCH, CHALICE, NEXUS, or PECARN IAI/febrile/c-spine. magent does not examine the patient.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
333 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/pecarn_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 | $0.007 | 333 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age": 10,
"altered_mental_status": false,
"gcs_le_14": false,
"history_of_loc": false,
"history_of_vomiting": false,
"loc_ge_5_seconds": false,
"nonfrontal_scalp_hematoma": false,
"not_acting_normally": false,
"palpable_skull_fracture": false,
"severe_headache": false,
"severe_mechanism": false,
"signs_basilar_skull_fracture": false
},
{
"age": 10,
"altered_mental_status": false,
"gcs_le_14": false,
"history_of_loc": false,
"history_of_vomiting": false,
"loc_ge_5_seconds": false,
"nonfrontal_scalp_hematoma": false,
"not_acting_normally": false,
"palpable_skull_fracture": false,
"severe_headache": false,
"severe_mechanism": false,
"signs_basilar_skull_fracture": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$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 (0-17). Age 0 and 1 use the lt_2 tree; age 2 through 17 use the ge_2 tree. Age 18 is rejected.",
"type": "integer"
},
"altered_mental_status": {
"description": "Altered mental status as assigned by the caller (paper: agitation, somnolence, repetitive questioning, or slow response). true or false. High-risk in both trees.",
"type": "boolean"
},
"gcs_le_14": {
"description": "GCS <=14 as assigned by the caller. true or false. High-risk in both trees. GCS 15 is not <=14. magent does not take a GCS integer.",
"type": "boolean"
},
"history_of_loc": {
"description": "History of loss of consciousness as assigned by the caller. true or false. Intermediate only on the ge_2 tree; parsed but not scored when age < 2.",
"type": "boolean"
},
"history_of_vomiting": {
"description": "History of vomiting as assigned by the caller. true or false. Intermediate only on the ge_2 tree; parsed but not scored when age < 2.",
"type": "boolean"
},
"loc_ge_5_seconds": {
"description": "Loss of consciousness >=5 seconds as assigned by the caller. true or false. Intermediate only on the lt_2 tree; parsed but not scored when age >= 2.",
"type": "boolean"
},
"nonfrontal_scalp_hematoma": {
"description": "Occipital, parietal, or temporal scalp hematoma (not frontal) as assigned by the caller. true or false. Intermediate only on the lt_2 tree; parsed but not scored when age >= 2.",
"type": "boolean"
},
"not_acting_normally": {
"description": "Not acting normally per parent report as assigned by the caller. true or false. Intermediate only on the lt_2 tree; parsed but not scored when age >= 2.",
"type": "boolean"
},
"palpable_skull_fracture": {
"description": "Palpable skull fracture as assigned by the caller. true or false. High-risk only on the lt_2 tree; parsed but not scored when age >= 2.",
"type": "boolean"
},
"severe_headache": {
"description": "Severe headache as assigned by the caller. true or false. Intermediate only on the ge_2 tree; parsed but not scored when age < 2.",
"type": "boolean"
},
"severe_mechanism": {
"description": "Severe mechanism as assigned by the caller. true or false. Intermediate in both trees. Paper list: MVC ejection/rollover/death of another passenger; unhelmeted pedestrian or bicyclist struck by a motorized vehicle; fall >3 ft if <2 years or >5 ft if >=2 years; head struck by a high-impact object. magent does not classify mechanism or take fall height.",
"type": "boolean"
},
"signs_basilar_skull_fracture": {
"description": "Signs of basilar skull fracture as assigned by the caller. true or false. High-risk only on the ge_2 tree; parsed but not scored when age < 2.",
"type": "boolean"
}
},
"required": [
"age",
"gcs_le_14",
"altered_mental_status",
"palpable_skull_fracture",
"signs_basilar_skull_fracture",
"nonfrontal_scalp_hematoma",
"loc_ge_5_seconds",
"not_acting_normally",
"history_of_loc",
"history_of_vomiting",
"severe_headache",
"severe_mechanism"
],
"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"
}