{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "The degree to which a paramagnetic contrast agent can enhance the proton longitudinal relaxation rate constant (R1, 1/T1), normalized to the concentration of the contrast agent. Also referred to as r1. Typically expressed in units of l/mmol/s",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "5f336dd4-db81-5653-939a-25648922f08e",
  "concept_id" : "9d58e990-3767-5bcf-b190-de7c41345d92",
  "ancestors" : {
    "126380" : 0
  },
  "id" : "a8d478eb-4572-4513-8147-6bc009b77e55",
  "code" : "126380",
  "display" : "Contrast Longitudinal Relaxivity",
  "version" : "01"
}