Stroke, Vol 18, 1018-1024, Copyright © 1987 by American Heart Association
P Grolimund, RW Seiler, R Aaslid, P Huber and H Zurbruegg
Results from 1,039 combined cervical and transcranial Doppler examinations
are reported. Satisfactory transcranial signals were not found in 2.7% of
the cases. Compared with angiography, the accuracy of transcranial criteria
in assessing collateral flow over the circle of Willis was 94 and 88% for
anterior and posterior circulation, respectively. The method also appeared
very promising for detection of lesions of the intracranial arteries
although the number of such cases with angiographic verification was
limited in the present series. Arterial narrowing due to cerebral vasospasm
was diagnosed with a sensitivity of 80%. In patients with ruptured
intracranial aneurysms, an incidence of 93% arterial narrowing in basal
cerebral arteries was found. Patients with subarachnoid hemorrhage and no
aneurysm on angiography also showed arterial narrowing with an incidence of
56%. It was possible to monitor the time course and severity of cerebral
vasospasm. Arteriovenous malformations were characterized by Doppler
findings of high velocities and low pulsatilities. These lesions were
diagnosed with an accuracy of 95%.
ARTICLES
Evaluation of cerebrovascular disease by combined extracranial and transcranial Doppler sonography. Experience in 1,039 patients
Department of Neurosurgery, University Hospital, Bern, Switzerland.
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