title: MCA flow asymmetry is a marker for cerebrovascular disease.
abstract: Utilizing the UIC Vascular Laboratory Registry, we retrospectively analysed the significance of side to side middle cerebral artery (MCA) flow velocity differences. Side to side differences > 15 percent measured by transcranial Doppler were considered asymmetric. Asymmetric subjects had 5 times greater chance of having significant cervical carotid narrowing on either side on Duplex Doppler and a 3.7 times greater chance of having a stroke on brain CT or MRI. MCA flow velocity asymmetry is a marker for underlying carotid disease and stroke.
authors.affiliation: Department of Neurology, University of Illinois at Chicago, USA.
authors.forename: S U
authors.initials: SU
authors.lastname: Brint
authors.forename: H R
authors.initials: HR
authors.lastname: Al-Khalidi
authors.forename: B
authors.initials: B
authors.lastname: Vatel
authors.forename: D B
authors.initials: DB
authors.lastname: Hier
mesh_terms: D001783:Blood Flow Velocity; D002545:Brain Ischemia / Q000150:complications / Q000000981:diagnostic imaging; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D016893:Carotid Stenosis / Q000150:complications / Q000000981:diagnostic imaging; D002536:Cerebral Arteries / Q000503:physiopathology*; D002544:Cerebral Infarction / Q000150:complications / Q000000981:diagnostic imaging; D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000503:physiopathology*; D006801:Humans; D018616:Ultrasonography, Doppler, Duplex; D017585:Ultrasonography, Doppler, Transcranial