[Angio-ultrasonography--a method of examining the extracranial arteries].

The authors describe a method of investigations of the extracranial cerebral arteries--angioultrasonography based on the Doppler effect. The study was done with a Polish apparatus designed and produced by the Experimental Laboratory of the Institute of Basic Technical Problems, Polish Academy of Sciences. The study confirmed the usefulness of this method in the diagnosis of arterial diseases involving the extracranial arteries supplying the brain. A high agreement was demonstrated between the results of angioultrasonography and classical angiography. Owing to the use of a grey scale it was possible to localize accurately the site of stenosis or occlusion of the studied artery.