From the case:
MRI spine - sagittal (anatomy quiz)
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/68679/annotated_viewer_json?lang=us"}
Labels:
1. conus medullaris
2. ligamentum flavum
3. nucleus pulposus (of L2/L3 intervertebral disc)
4. posterior longitudinal ligament
5. sacral promontory