{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "The 18th image in the AAPM TG18-LN8- set used for DICOM grayscale calibration. See [AAPM OR 03]",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "edcf6828-b2c8-5028-b7f7-246cb8d5ac80",
  "concept_id" : "e87156e2-639c-5591-a97f-9088d914aad7",
  "ancestors" : {
    "109822" : 0
  },
  "id" : "0cda8d1e-0a3c-40cb-b6c4-9fd92876085c",
  "code" : "109822",
  "display" : "TG18-LN8-18 Pattern",
  "version" : "01"
}