title: Balloon test occlusion with the Doppler velocity guidewire.
abstract: Transcranial Doppler ultrasonography is the most commonly used method of cerebrovascular blood flow velocity measurement, but it is subject to certain technical and anatomic limitations. The Doppler velocity guidewire measures blood flow velocity within any vessel during cerebral angiography, overcoming these limitations. We report the first use of this guidewire in the measurement of blood flow velocity during balloon test occlusion, with results similar to simultaneously measured transcranial Doppler ultrasonography. Velocity measurement by Doppler guidewire could be useful in balloon test occlusion for vertebrobasilar circulation, where transcranial Doppler ultrasonography is limited, and provide anatomically specific blood flow velocity measurements in the diagnosis and treatment of stroke and other cerebrovascular diseases.
authors.affiliation: Department of Neurological Surgery, University of Washington and Harborview Medical Center, Seattle, WA 98195, USA. mlevitt@u.washington.edu
authors.forename: Michael R
authors.initials: MR
authors.lastname: Levitt
authors.forename: Sandeep S
authors.initials: SS
authors.lastname: Vaidya
authors.forename: Jeffrey C
authors.initials: JC
authors.lastname: Mai
authors.forename: Danial K
authors.initials: DK
authors.lastname: Hallam
authors.forename: Louis J
authors.initials: LJ
authors.lastname: Kim
authors.forename: Basavaraj V
authors.initials: BV
authors.lastname: Ghodke
mesh_terms: D021721:Balloon Occlusion / Q000295:instrumentation*; D001783:Blood Flow Velocity; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery; D002560:Cerebrovascular Circulation; D002813:Chondrosarcoma / Q000098:blood supply / Q000175:diagnosis* / Q000628:therapy; D003097:Collateral Circulation; D004621:Embolization, Therapeutic; D004867:Equipment Design; D006801:Humans; D017078:Laser-Doppler Flowmetry / Q000295:instrumentation*; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012888:Skull Neoplasms / Q000098:blood supply / Q000175:diagnosis* / Q000628:therapy; D017585:Ultrasonography, Doppler, Transcranial / Q000295:instrumentation*; D062666:Vascular Access Devices; D014656:Vascular Surgical Procedures