![]() ![]() Our study confirmed the usefulness of combined extracranial and transcranial DS in the diagnosis and exclusion of proximal BA occlusion. In our series, CTA results prompted indication for intra-arterial thrombolysis in 5 patients.Ĭonclusions-CTA was superior to DS in the assessment of BA patency in patients with the syndrome of acute BA ischemia in terms of feasibility and conclusiveness, particularly in cases with distal BA occlusion. In addition to the diagnosis or exclusion of BA occlusion, CTA provided information on the exact site and length of BA occlusion and collateral pathways. In 1 patient with DS performed after CTA, recanalization was demonstrated. DS was false-negative in 2 patients with distal BA occlusion shown by CTA and digital subtraction angiography. In an additional 9 patients, the results of DS were inconclusive. DS was diagnostic in only 7 of 19 patients, indicating certain BA occlusion in 3 patients and BA patency in 4 patients. Because of severe BA calcification, CTA results were inconclusive in 1 patient. ![]() ![]() CTA revealed complete BA occlusion in 9 patients and incomplete BA occlusion with some residual flow in 2 patients. Results-CTA was diagnostic in all but 1 patient. In 6 of 19 patients, we performed digital subtraction angiography. Prior extracranial and transcranial DS was performed in all but 1 patient, with DS 4 hours after CTA. Methods-We prospectively studied 19 patients (mean±SD age, 58☑1 years) with clinically suspected acute BA occlusion by DS and CTA. The usefulness of CTA for vascular diagnosis in acute basilar artery (BA) ischemia has not yet been studied. Customer Service and Ordering Informationīackground and Purpose-Both Doppler sonography (DS) and spiral CT angiography (CTA) are noninvasive vascular assessment tools with a high potential for application in acute cerebral ischemia.Stroke: Vascular and Interventional Neurology.Journal of the American Heart Association (JAHA).Circ: Cardiovascular Quality & Outcomes.Arteriosclerosis, Thrombosis, and Vascular Biology (ATVB). ![]()
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