description: The radiation energy used for radiotherapy. The energy spectrum is characterized\nby the maximum energy, the maximum acceleration voltage, or the used isotope.
package_name: hl7.fhir.us.codex-radiation-therapy
derivation: constraint
name: RadiotherapyEnergyOrIsotope
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-energy-or-isotope'}
    index: 1
  value:
    short: The isotope used for radiotherapy.
    choices: [valueCodeableConcept]
    index: 13
    slicing:
      slices:
        valueCodeableConcept:
          match: {}
          schema:
            short: The isotope used for radiotherapy.
            choices: [valueCodeableConcept]
            index: 13
          min: 0
          max: 1
  valueCodeableConcept:
    type: CodeableConcept
    short: The isotope used for radiotherapy.
    choiceOf: value
    index: 14
    slicing:
      slices:
        valueCodeableConcept:
          match: {}
          schema: {type: CodeableConcept, short: The isotope used for radiotherapy., choiceOf: value, index: 14}
          min: 0
          max: 1
  valueQuantity:
    type: Quantity
    short: |-
      The spectrum of radiation energy characterized by a maximum value.
      For electrons, the maximum energy is given in MeV. For photons, the maximum acceleration voltage is given in MV or kV, although those are not units of energy.
    choiceOf: value
    index: 8
    slicing:
      slices:
        valueQuantity:
          match: {}
          schema:
            type: Quantity
            short: |-
              The spectrum of radiation energy characterized by a maximum value.
              For electrons, the maximum energy is given in MeV. For photons, the maximum acceleration voltage is given in MV or kV, although those are not units of energy.
            choiceOf: value
            index: 8
          min: 0
          max: 1
  value[x]:
    elements:
      value: {index: 9}
      system: {index: 10}
      code: {index: 11}
    required: [value, system, code]
package_version: 2.0.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-energy-or-isotope
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.0.0
required: [value, valueCodeableConcept, valueQuantity]