{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "A quantitative numerical statement of the relative attenuation of the X-Ray beam at a specified point. Coefficient that describes the fraction of a beam of X-Rays or gamma rays that is absorbed or scattered per unit thickness of the absorber. This value basically accounts for the number of atoms in a cubic cm volume of material and the probability of a photon being scattered or absorbed from the nucleus or an electron of one of these atoms. Usually expressed in Hounsfield units [referred to as CT Number in Fraser and Pare]",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "edcf6828-b2c8-5028-b7f7-246cb8d5ac80",
  "concept_id" : "703eba83-df12-5afc-bd44-d59d925d77d3",
  "ancestors" : {
    "112031" : 0
  },
  "id" : "04c1789c-7a06-4f0c-8a2f-771c8947f016",
  "code" : "112031",
  "display" : "Attenuation Coefficient",
  "version" : "01"
}