<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="d836b019-d28c-4cee-987d-0d6bcc02e33f" />
  <meta>
    <versionId value="1" />
    <lastUpdated value="2018-07-26T14:03:13.208+00:00" />
  </meta>
  <url value="http://example.org/fhir/StructureDefinition/T_ObservationImageExtension" />
  <name value="T_ObservationImageExtension" />
  <status value="draft" />
  <date value="2018-07-26T14:02:40.903Z" />
  <fhirVersion value="3.0.1" />
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM Mapping" />
  </mapping>
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="Observation" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://example.org/fhir/StructureDefinition/T_ObservationImageExtension" />
    </element>
    <element id="Extension.value[x]:valueReference">
      <path value="Extension.valueReference" />
      <sliceName value="valueReference" />
      <type>
        <code value="Reference" />
        <profile value="ImangingStudy" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/ImagingStudy" />
        <aggregation value="referenced" />
      </type>
    </element>
  </differential>
</StructureDefinition>