title: Vertebral artery stenosis with brain stem ischemia: anatomic and therapeutic implications.
mesh_terms: D000368:Aged; D002545:Brain Ischemia / Q000601:surgery*; D001933:Brain Stem / Q000098:blood supply*; D002941:Circle of Willis / Q000002:abnormalities; D003251:Constriction, Pathologic; D005260:Female; D006801:Humans; D014711:Vertebral Artery / Q000033:anatomy & histology; D014715:Vertebrobasilar Insufficiency / Q000209:etiology / Q000601:surgery*