[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.

[Results of examination of cerebral arteries by the Doppler ultrasound method as compared to angiographic results].

The result of angiographic and ultrasonographic investigations were compared in 87 patients with cerebral circulation disturbances. A high degree of agreement (79%) was demonstrated between the results of Doppler ultrasonography and angiography. The authors stress the importance of ultrasonographic investigations in the differential diagnosis between stenosis and occlusion of these arteries and call attention to the possibility of repeated investigations enabling the progression of atherosclerotic lesions to be observed.

[Usefulness of Doppler ultrasound method in the diagnosis of cerebrovascular disorders].

The authors carried out ultrasonographic investigations in 136 patients with disturbances of the cerebral circulation and compared them with the results of clinical observations. In a high proportion of cases an agreement was found between the results of ultrasonographic investigations and clinical observations. Besides that, the authors call attention to the importance of these Doppler ultrasonographic investigations in the so called silent cases without clinical signs, and in patients with progressing atherosclerotic changes, particularly in the qualification of these patients for surgical procedures.

[The clinical picture of stenosis and occlusion of the extracranial cerebral arteries].

The authors report a clinical analysis of 200 cases of various forms of stenosis and occlusion of the extracranial arteries supplying the brain. The cases were collected in a period of 15 years. Follow-up investigations were conducted in 100 conservatively treated patients and 100 surgically treated ones.

[Ultrasonographic examination in patients following surgery for restoring the patency of extracranial cerebral arteries].

The results of ultrasonographic investigations of 25 patients after operations for restoring the patency of extracranial brain-supplying arteries are presented. In 9 patients this investigation was done before and after the operation. The reason of these surgical interventions were stenoses or occlusions of the carotid or subclavian arteries or brachiocephalic trunk.