description: The modality and associated energy used for imaging in Image Guided Radiotherapy (IGRT)
package_name: hl7.fhir.us.codex
derivation: constraint
name: ImageGuidedRadiotherapyModality
type: Extension
elements:
  extension:
    index: 0
    slicing:
      slices:
        modality:
          match: {}
          schema:
            mustSupport: true
            _required: true
            index: 1
            extensions: {}
            elements:
              extension: {index: 2}
              url:
                pattern: {type: Uri, value: modality}
                index: 3
              value:
                choices: [valueCodeableConcept]
                index: 5
              valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 6}
        energy:
          match: {}
          schema:
            mustSupport: true
            index: 7
            extensions: {}
            elements:
              extension: {index: 8}
              url:
                pattern: {type: Uri, value: energy}
                index: 9
              value:
                choices: [valueCodeableConcept]
                index: 11
              valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 12}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-image-guided-radiotherapy-modality'}
    index: 13
  value:
    choices: []
    index: 15
package_version: radiation-therapy-2.0.0-ballot
extensions:
  modality:
    url: null
    mustSupport: true
    _required: true
    index: 1
    extensions: {}
    elements:
      extension: {index: 2}
      url:
        pattern: {type: Uri, value: modality}
        index: 3
      value:
        choices: [valueCodeableConcept]
        index: 5
      valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 6}
  energy:
    url: null
    mustSupport: true
    index: 7
    extensions: {}
    elements:
      extension: {index: 8}
      url:
        pattern: {type: Uri, value: energy}
        index: 9
      value:
        choices: [valueCodeableConcept]
        index: 11
      valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 12}
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-image-guided-radiotherapy-modality
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.0.0-ballot
required: [extension]