MCA flow asymmetry is a marker for cerebrovascular disease.
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.
Brint, SU; Al-Khalidi, HR; Vatel, B; Hier, DB
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