{"resourceType": "Observation",
 
 "status": "final",
  "category": [ {
    "coding": [ {
      "system": "http://hl7.org/fhir/observation-category",
      "code": "imaging"
    } ]
  } ],
  "code": {
    "coding": [ {
      "system": "https://www.dicom.org.tw/cs/medcalImage",
      "code": "SVG_Annotation"
    } ]
  },
 "derivedFrom": [{"reference": "Observation/FHIR_SVG_Annotation_id_123"}],
 "component": [ 
{"code": {"coding": [{"system": "https://www.dicom.org.tw/cs/medcalImage",
 "code": "chest_left"}]}}, 
{"code": {"coding": [{"system": "https://www.dicom.org.tw/cs/medcalImage",
 "code": "left_lower_lobe"}]}}, 
{"code": {"coding": [{"system": "https://www.dicom.org.tw/cs/medcalImage",
"code": "internal_lobe"}]}},
{"code": {"coding": [{"system": "https://www.dicom.org.tw/cs/medcalImage",
"code": "central"}]}},
{"code": {"coding": [{"system": "https://www.dicom.org.tw/cs/medcalImage",
"code": "thick_wall"}]}}  ]
}