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RADS radiologist's score (Oh)

RADS

Sum four caller-assigned Oh 2012 radiologist's-score quadrant findings on one 1-cm axial CT slice (normal 0, interstitial 1, ground_glass 2, consolidation 3; range 0-12) and return high when the score is greater than 8.

LIVE $0.005 USDC GET /api/calc/rads

Markdown: /docs/rads.md · Canonical: https://magentlab.com/docs/rads

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

Sum four caller-assigned Oh 2012 radiologist's-score quadrant findings on one 1-cm axial CT slice (normal 0, interstitial 1, ground_glass 2, consolidation 3; range 0-12) and return high when the score is greater than 8.

When to use

When an agent already has caller-assigned worst findings for four CT quadrants on one 1-cm axial slice and needs the published Oh 2012 RADS total and the score > 8 high flag. magent does not interpret CT, perform bronchoscopy, or assign AIS inhalation grade.

When not to use

• Not a medical device.
• Not a diagnosis of inhalation injury.
• Not a bronchoscopy substitute. magent does not take fiberoptic bronchoscopy grade.
• The caller assigns each quadrant finding. magent does not interpret CT or read images.
• Four quadrants on one 1-cm axial slice (Oh 2012 as reprinted in Dries/Walker 2015 Table 2). Not an eight-quadrant form.
• Not Endorf AIS inhalation grade. Not Yamamura bronchial wall thickness.
• Oh 2012 associated high RADS plus +FOB with a 12.7-fold composite pneumonia/ALI-ARDS/death outcome. This tool only sums the four CT findings; it does not take FOB or report that odds ratio.

Formula

RADS = q1 + q2 + q3 + q4; each quadrant worst finding on one 1-cm axial CT slice (Oh 2012 radiologist's score as reprinted in Dries/Walker 2015 Table 2): normal 0, interstitial (increased interstitial markings) 1, ground_glass 2, consolidation 3; four quadrants (not eight); range 0-12; high iff score > 8 per slice

Citation

Title

Admission Chest CT Complements Fiberoptic Bronchoscopy in Prediction of Adverse Outcomes in Thermally Injured Patients

Authors

Oh JS, Chung KK, Allen A, Batchinsky AI, Huzar T, King BT, et al.

Source

J Burn Care Res. 2012;33(4):532-538

DOI

10.1097/BCR.0b013e318237455f

Worked example

Also searched as

• RADS
• radiologist's score
• Oh 2012 RADS
• admission chest CT RADS
• thermal injury CT score
• smoke inhalation CT score
• Oh radiologist score
• four quadrant CT RADS

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/rads?q1=normal&q2=normal&q3=normal&q4=normal

Full URL: https://api.magentlab.com/api/calc/rads?q1=normal&q2=normal&q3=normal&q4=normal

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/rads?q1=normal&q2=normal&q3=normal&q4=normal"

Parameters

Bulk (POST)

POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement.

POST /api/calc/rads Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 PREVIEW

• 1 to 25 items. Each item uses the same keys as the GET query parameters.
• POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows.
• The first invalid item fails the whole request (index in the 400 JSON). You are not charged.
• HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row.
• Catalog misses (empty matches, found=false) stay paid 200s inside that slot.
• x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items.

Example request (fixture)

{
  "items": [
    {
      "q1": "normal",
      "q2": "normal",
      "q3": "normal",
      "q4": "normal"
    },
    {
      "q1": "normal",
      "q2": "normal",
      "q3": "normal",
      "q4": "normal"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "count": 2,
  "path": "/api/calc/rads",
  "items": [
    {
      "high": false,
      "components": [
        {
          "value": "normal",
          "factor": "q1",
          "points": 0,
          "present": false
        },
        {
          "value": "normal",
          "factor": "q2",
          "points": 0,
          "present": false
        },
        {
          "value": "normal",
          "factor": "q3",
          "points": 0,
          "present": false
        },
        {
          "value": "normal",
          "factor": "q4",
          "points": 0,
          "present": false
        }
      ],
      "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.",
      "citation": {
        "authors": "Oh JS, Chung KK, Allen A, Batchinsky AI, Huzar T, King BT, et al.",
        "doi": "10.1097/BCR.0b013e318237455f",
        "id": "oh-2012",
        "pmid": "22210063",
        "source": "J Burn Care Res. 2012;33(4):532-538",
        "title": "Admission Chest CT Complements Fiberoptic Bronchoscopy in Prediction of Adverse Outcomes in Thermally Injured Patients"
      },
      "formula": "rads",
      "formula_expression": "RADS = q1 + q2 + q3 + q4; each quadrant worst finding on one 1-cm axial CT slice (Oh 2012 radiologist's score as reprinted in Dries/Walker 2015 Table 2): normal 0, interstitial (increased interstitial markings) 1, ground_glass 2, consolidation 3; four quadrants (not eight); range 0-12; high iff score > 8 per slice",
      "max_score": 12,
      "score": 0,
      "q1": "normal",
      "q2": "normal",
      "q3": "normal",
      "q4": "normal"
    },
    {
      "high": false,
      "components": [
        {
          "value": "normal",
          "factor": "q1",
          "points": 0,
          "present": false
        },
        {
          "value": "normal",
          "factor": "q2",
          "points": 0,
          "present": false
        },
        {
          "value": "normal",
          "factor": "q3",
          "points": 0,
          "present": false
        },
        {
          "value": "normal",
          "factor": "q4",
          "points": 0,
          "present": false
        }
      ],
      "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.",
      "citation": {
        "authors": "Oh JS, Chung KK, Allen A, Batchinsky AI, Huzar T, King BT, et al.",
        "doi": "10.1097/BCR.0b013e318237455f",
        "id": "oh-2012",
        "pmid": "22210063",
        "source": "J Burn Care Res. 2012;33(4):532-538",
        "title": "Admission Chest CT Complements Fiberoptic Bronchoscopy in Prediction of Adverse Outcomes in Thermally Injured Patients"
      },
      "formula": "rads",
      "formula_expression": "RADS = q1 + q2 + q3 + q4; each quadrant worst finding on one 1-cm axial CT slice (Oh 2012 radiologist's score as reprinted in Dries/Walker 2015 Table 2): normal 0, interstitial (increased interstitial markings) 1, ground_glass 2, consolidation 3; four quadrants (not eight); range 0-12; high iff score > 8 per slice",
      "max_score": 12,
      "score": 0,
      "q1": "normal",
      "q2": "normal",
      "q3": "normal",
      "q4": "normal"
    }
  ]
}

Response

Example JSON

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "high": false,
  "components": [
    {
      "value": "normal",
      "factor": "q1",
      "points": 0,
      "present": false
    },
    {
      "value": "normal",
      "factor": "q2",
      "points": 0,
      "present": false
    },
    {
      "value": "normal",
      "factor": "q3",
      "points": 0,
      "present": false
    },
    {
      "value": "normal",
      "factor": "q4",
      "points": 0,
      "present": false
    }
  ],
  "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.",
  "citation": {
    "authors": "Oh JS, Chung KK, Allen A, Batchinsky AI, Huzar T, King BT, et al.",
    "doi": "10.1097/BCR.0b013e318237455f",
    "id": "oh-2012",
    "pmid": "22210063",
    "source": "J Burn Care Res. 2012;33(4):532-538",
    "title": "Admission Chest CT Complements Fiberoptic Bronchoscopy in Prediction of Adverse Outcomes in Thermally Injured Patients"
  },
  "formula": "rads",
  "formula_expression": "RADS = q1 + q2 + q3 + q4; each quadrant worst finding on one 1-cm axial CT slice (Oh 2012 radiologist's score as reprinted in Dries/Walker 2015 Table 2): normal 0, interstitial (increased interstitial markings) 1, ground_glass 2, consolidation 3; four quadrants (not eight); range 0-12; high iff score > 8 per slice",
  "max_score": 12,
  "score": 0,
  "q1": "normal",
  "q2": "normal",
  "q3": "normal",
  "q4": "normal"
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

Related tools

• AIS inhalation — Echo the caller-assigned Endorf 2007 bronchoscopic AIS inhalation grade (0-4) with the published description and high_grade (true when grade is 2-4). magent does not perform bronchoscopy. Not ISS body-region AIS. Not RADS CT smoke score.
• LIPS — Sum Gajic 2011 Table 3 lung injury prediction score items from caller-assigned flags and return the published ROC cutoff band (low <4, high ≥4).

Payment

Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /docs/mcp.

Guarantees

• HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged. HTTP 402 never includes the tool JSON.
• exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE.
• HTTP 402 is unpaid only. Do not sign a second authorization because of a 503.
• Execution is timeout-bounded and concurrency-capped.
• Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.