title: Duplex scanning in extracranial vertebral artery dissection.
abstract: 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.
authors.affiliation: Clinique des Maladies du Système Nerveux, Hôpital de la Salpêtrière, Paris, France.
authors.forename: P J
authors.initials: PJ
authors.lastname: Touboul
authors.forename: J L
authors.initials: JL
authors.lastname: Mas
authors.forename: M G
authors.initials: MG
authors.lastname: Bousser
authors.forename: D
authors.initials: D
authors.lastname: Laplane
mesh_terms: D000328:Adult; D000784:Aortic Dissection / Q000473:pathology*; D005260:Female; D006801:Humans; D014463:Ultrasonography; D014711:Vertebral Artery / Q000473:pathology*