one-hundred sixty-seven patients with 190 carotid arteries ( 109 asymptomatic ) demonstrating 50-99 % stenosis by arteriography ( 80 ) , duplex scanning , or other noninvasive techniques were followed from 1-84 months ( mean 24.2 ) for evidence of brain infarct , transient ischemic attacks , or vertebrobasilar symptoms .
C0006104
brain
C0007787
transient ischemic attacks