preferred_name: Circle of Willis &#x7C; MR angiogram &#x7C; Radiology
preferred_name_lc: circle of willis &#x7c; mr angiogram &#x7c; radiology
label: Circle of Willis &#x7C; MR angiogram &#x7C; Radiology
label_lc: circle of willis &#x7c; mr angiogram &#x7c; radiology