{description: The imaging study from which the imaging selection was derived, package_name: hl7.fhir.r6.core, name: derived-from, type: reference, package_version: 6.0.0-ballot1, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/ImagingSelection-derived-from', version: 6.0.0-ballot1}