{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "Method for calculating left ventricular volume from two orthogonal views containing the true long axis (usually the apical 4 and 2 chamber views). Volume = [pL1 / 6] * [(4A1) ÷ (pL1) ] * [(4A2) ÷ (pL2) ]",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "5f336dd4-db81-5653-939a-25648922f08e",
  "concept_id" : "c2aaecac-52ba-541b-956e-0189ddd5b2f6",
  "ancestors" : {
    "125204" : 0
  },
  "id" : "910bb9fa-10d0-41dc-baf7-815b856a053c",
  "code" : "125204",
  "display" : "Area-length biplane",
  "version" : "01"
}