FHIR Imaging ServiceRequest Profile IG, published by HL7 International / Imaging Integration. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/imaging-service-request-ig/ and changes regularly. See the Directory of published versions

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: DICOM® Modality LUT and Rescale Types - JSON Representation

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{
  "resourceType" : "CodeSystem",
  "id" : "dicom-modality-lut-and-rescale-types",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem dicom-modality-lut-and-rescale-types</b></p><a name=\"dicom-modality-lut-and-rescale-types\"> </a><a name=\"hcdicom-modality-lut-and-rescale-types\"> </a><a name=\"dicom-modality-lut-and-rescale-types-en-US\"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/uv/imaging-service-request-ig/CodeSystem/dicom-modality-lut-and-rescale-types</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">OD<a name=\"dicom-modality-lut-and-rescale-types-OD\"> </a></td><td>The number in the LUT represents thousands of optical density. That is, a value of 2140 represents an optical density of 2.140.</td></tr><tr><td style=\"white-space:nowrap\">HU<a name=\"dicom-modality-lut-and-rescale-types-HU\"> </a></td><td>Hounsfield Units (CT)</td></tr><tr><td style=\"white-space:nowrap\">US<a name=\"dicom-modality-lut-and-rescale-types-US\"> </a></td><td>Unspecified</td></tr><tr><td style=\"white-space:nowrap\">MGML<a name=\"dicom-modality-lut-and-rescale-types-MGML\"> </a></td><td>mg/ml</td></tr><tr><td style=\"white-space:nowrap\">Z_EFF<a name=\"dicom-modality-lut-and-rescale-types-Z_EFF\"> </a></td><td>Effective Atomic Number (i.e., Effective-Z)</td></tr><tr><td style=\"white-space:nowrap\">ED<a name=\"dicom-modality-lut-and-rescale-types-ED\"> </a></td><td>Electron density in 1023 electrons/ml</td></tr><tr><td style=\"white-space:nowrap\">EDW<a name=\"dicom-modality-lut-and-rescale-types-EDW\"> </a></td><td>Electron density normalized to water in units of N/Nw where N is number of electrons per unit volume, and Nw is number of electrons in the same unit of water at standard temperature and pressure.</td></tr><tr><td style=\"white-space:nowrap\">HU_MOD<a name=\"dicom-modality-lut-and-rescale-types-HU_MOD\"> </a></td><td>Modified Hounsfield Unit</td></tr><tr><td style=\"white-space:nowrap\">PCT<a name=\"dicom-modality-lut-and-rescale-types-PCT\"> </a></td><td>Percentage (%)</td></tr></table></div>"
  },
  "extension" : [
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode" : "ii"
    }
  ],
  "url" : "http://hl7.org/fhir/uv/imaging-service-request-ig/CodeSystem/dicom-modality-lut-and-rescale-types",
  "version" : "0.1.0",
  "name" : "DICOMModalityLUTAndRescaleTypes",
  "title" : "DICOM® Modality LUT and Rescale Types",
  "status" : "draft",
  "experimental" : false,
  "date" : "2025-03-26T19:32:53+00:00",
  "publisher" : "HL7 International / Imaging Integration",
  "contact" : [
    {
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org/Special/committees/imagemgt/index.cfm"
        }
      ]
    },
    {
      "name" : "HL7 International / Imaging Integration",
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org/Special/committees/imagemgt/index.cfm"
        }
      ]
    },
    {
      "name" : "Jonathan Whitby",
      "telecom" : [
        {
          "system" : "email",
          "value" : "jonathan.whitby@mi.medical.canon"
        }
      ]
    },
    {
      "name" : "Brian Bialecki",
      "telecom" : [
        {
          "system" : "email",
          "value" : "bbialecki@acr.org"
        }
      ]
    },
    {
      "name" : "Bas van den Heuvel",
      "telecom" : [
        {
          "system" : "email",
          "value" : "bas.van.den.heuvel@philips.com"
        }
      ]
    }
  ],
  "description" : "DICOM® Modality LUT and Rescale Types extracted from DICOM PS3.6 C.11.1.1.2.",
  "jurisdiction" : [
    {
      "coding" : [
        {
          "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code" : "001"
        }
      ]
    }
  ],
  "caseSensitive" : true,
  "content" : "complete",
  "count" : 9,
  "concept" : [
    {
      "code" : "OD",
      "display" : "OD",
      "definition" : "The number in the LUT represents thousands of optical density. That is, a value of 2140 represents an optical density of 2.140."
    },
    {
      "code" : "HU",
      "display" : "HU",
      "definition" : "Hounsfield Units (CT)"
    },
    {
      "code" : "US",
      "display" : "US",
      "definition" : "Unspecified"
    },
    {
      "code" : "MGML",
      "display" : "MGML",
      "definition" : "mg/ml"
    },
    {
      "code" : "Z_EFF",
      "display" : "Z_EFF",
      "definition" : "Effective Atomic Number (i.e., Effective-Z)"
    },
    {
      "code" : "ED",
      "display" : "ED",
      "definition" : "Electron density in 1023 electrons/ml"
    },
    {
      "code" : "EDW",
      "display" : "EDW",
      "definition" : "Electron density normalized to water in units of N/Nw where N is number of electrons per unit volume, and Nw is number of electrons in the same unit of water at standard temperature and pressure."
    },
    {
      "code" : "HU_MOD",
      "display" : "HU_MOD",
      "definition" : "Modified Hounsfield Unit"
    },
    {
      "code" : "PCT",
      "display" : "PCT",
      "definition" : "Percentage (%)"
    }
  ]
}