{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "The time at which the concentration-time curve achieves half of its peak density for the first time. Used as a concept name for a value or as a method; e.g. used as a method of calculation for BAT. See Shpilfoygel Med Phys 2008. doi: 10.1118/1.1288669",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "edcf6828-b2c8-5028-b7f7-246cb8d5ac80",
  "concept_id" : "cf5535d1-8fec-505a-a185-df8e6f2ae206",
  "ancestors" : {
    "126372" : 0
  },
  "id" : "ccd571a0-3ba1-4eb5-986c-67bfe6c6fd02",
  "code" : "126372",
  "display" : "Time of Leading Half-Peak Concentration",
  "version" : "01"
}