B-Mode sonography as a screening procedure for asymptomatic carotid bruits.

Sixty-five B-mode carotid sonograms were obtained at random on patients undergoing cerebral arteriography. A 5 mHz transducer was used. The results were correlated with magnified cervical carotid arteriograms obtained on these patients. B-mode sonography was accurate in evaluating the carotid arteries for surgical stenosis in 72 per cent of the cases. The feasibility of using B-mode sonography as a screening test in patients with asymptomatic carotid bruits is discussed.