title: Vertebral artery insufficiency and rotational obstruction.
mesh_terms: D000328:Adult; D001027:Aortography; D002533:Cerebral Angiography; D002561:Cerebrovascular Disorders; D006261:Headache; D006801:Humans; D002537:Intracranial Arteriosclerosis; D002546:Ischemic Attack, Transient; D008297:Male; D009759:Nystagmus, Pathologic; D012039:Regional Blood Flow; D014711:Vertebral Artery / Q000000981:diagnostic imaging; D014717:Vertigo; D014839:Vomiting