description: This cross-version extension represents ImagingStudy.patient from http://hl7.org/fhir/StructureDefinition/ImagingStudy|3.0.2 for use in FHIR R5. package_name: hl7.fhir.uv.xver-r3.r5 derivation: constraint name: ext_R3_ImagingStudy_patient type: Extension elements: value: base: {path: 'Extension.value[x]'} short: Who the images are of choices: [valueReference] index: 1 valueReference: short: Who the images are of refers: ['http://hl7.org/fhir/StructureDefinition/Patient'] type: Reference base: {path: 'Extension.value[x]'} choiceOf: value index: 2 url: pattern: {type: Uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-ImagingStudy.patient'} index: 3 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/3.0/StructureDefinition/extension-ImagingStudy.patient base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]