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Stroke, Vol 19, 116-121, Copyright © 1988 by American Heart Association

ARTICLES

Duplex scanning in extracranial vertebral artery dissection

PJ Touboul, JL Mas, MG Bousser and D Laplane
Clinique des Maladies du Systeme Nerveux, Hopital de la Salpetriere, Paris, France.

Ultrasonic (duplex scanning and continuous-wave Doppler) and angiographic findings in three patients with bilateral extracranial vertebral artery dissection are reported. A pattern of ultrasonic anomalies diagnostic of dissection is described, including association of a localized increase in diameter of the artery with hemodynamic signs of stenosis or occlusion at the same level and decreased pulsatility and presence of intravascular echoes in the enlarged segment.

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