{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "The AAPM TG18-RH50 Pattern used for LSF-line spectra function-(1k and 2k) evaluation by 5 horizontal lines at 50% luminance level. See [AAPM OR 03]",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "5f336dd4-db81-5653-939a-25648922f08e",
  "concept_id" : "a62672e9-0990-5192-b718-cedd7cd8ab81",
  "ancestors" : {
    "109848" : 0
  },
  "id" : "c5c6c1b6-98fd-4ab9-948c-5846812c540d",
  "code" : "109848",
  "display" : "TG18-RH50 Pattern",
  "version" : "01"
}