{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "Mitral valve area computed from flow and pressure gradient: Mitral valve Area = Flow / 38.0 * sqrt(Gradient[mmHg]) [Gorlin and Gorlin, Am Heart J, 1951]",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "5f336dd4-db81-5653-939a-25648922f08e",
  "concept_id" : "fb40efcc-d10c-5e17-bbdc-ecd78fbd483f",
  "ancestors" : {
    "122263" : 0
  },
  "id" : "46e93daa-de59-4d40-827b-88fe28dca6b9",
  "code" : "122263",
  "display" : "MVA = Flow / 38.0 * sqrt(Gradient[mmHg])",
  "version" : "01"
}