{description: ' Regions of Interest (ROI) within a subject Act. Primarily used for making secondary observations on a subset of a subject observation. The relationship between a ROI and its referenced Act is specified through an ActRelationship of type \"subject\" (SUBJ), which must always be present.', package_name: hl7.fhir.r4.core, name: v3.ActClassROI, type: null, package_version: 4.0.1, class: unknown, kind: null, url: 'http://terminology.hl7.org/ValueSet/v3-ActClassROI', version: '2014-03-26'}