description: The range of radiation to be given for this study. package_name: hl7.fhir.r2.core name: The amount of radiation, as a range type: null elements: extension: {name: extension, index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/imagingstudy-radiationDose'} index: 1 value: choices: [valueRange] index: 3 valueRange: {type: Range, choiceOf: value, index: 4} package_version: 1.0.2 extensions: {} class: datatype kind: datatype url: http://hl7.org/fhir/StructureDefinition/imagingstudy-radiationDose version: null required: [valueRange, value]