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Radiology, Vol 139, 287-295, Copyright © 1981 by Radiological Society of North America

ARTICLES

Digital subtraction angiography of the carotid arteries: a comparative study in 100 patients

WA Chilcote, MT Modic, WA Pavlicek, JR Little, AJ Furlan, PM Duchesneau and MA Weinstein

Conventional angiography and intravenous digital subtraction angiography (DSA) were used to examine the common carotid artery bifurcations in 100 patients with clinically suspected arteriosclerotic disease. In 60% of the patients, the quality of the DSA examination was good or excellent bilaterally; in 23%, the quality was good or excellent on one side; in the remaining 17%, both bifurcations were poorly visualized. There was excellent correlation of conventional and digital angiograms when the carotid bifurcations were well visualized with DSA (sensitivity 95%, specificity 99%, accuracy 97%). When the carotid bifurcations were not well visualized with DSA, there was a substantial chance for misinterpretation of the study (sensitivity 54%, specificity 70%, accuracy 64%). Digital subtraction angiography is a safe, rapid procedure that can be performed on an outpatient basis and can accurately evaluate the carotid bifurcation in approximately 70% of the arteries examined.


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