Outcome of Acute Stroke Patients Without Visible Occlusion on Early Arteriography
Stroke 35:1135-1140, Arnold,M.,et al, 2004
Silent Cerebral Microemboli Occurring During Carotid Angiography:Frequency as Determined with Doppler Sonography
AJR 161:1037-1040, Dagirmanjian,A.,et al, 1993