Rotational vertebral artery occlusion at C1-C2.
D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D001268:Atlanto-Axial Joint; D002533:Cerebral Angiography; D006257:Head; D006801:Humans; D008297:Male; D008875:Middle Aged; D012399:Rotation; D014711:Vertebral Artery / Q000000981:diagnostic imaging; D014715:Vertebrobasilar Insufficiency / Q000209:etiology*