title: [Measurement of portal blood flow with magnetic resonance imaging].
abstract: A new method for measuring portal blood flow using magnetic resonance imaging has been developed. Flow velocities are calculated from distances that are directly visualized using a new pulse sequence. In a phantom study, the measured flow rates showed a close correlation (r = 0.9996) with actual flow rates in the range 4.7 cm/sec to 22.8 cm/sec. In a study using volunteers, portal blood flow was quickly measured (about 18 seconds) using electrocardiographic gating. These measurements were compared with those obtained by Doppler ultrasound, with which they showed a close correlation in flow velocity (r = 0.968) and flow volume (r = 0.936). This method allows reasonably accurate quantitative analysis of portal blood flow in patients in whom the Doppler method can not be used because of obesity or intestinal gas.
authors.forename: T
authors.initials: T
authors.lastname: Tamada
authors.forename: F
authors.initials: F
authors.lastname: Moriyasu
authors.forename: S
authors.initials: S
authors.lastname: Ono
authors.forename: K
authors.initials: K
authors.lastname: Kajimura
authors.forename: Y
authors.initials: Y
authors.lastname: Soh
authors.forename: T
authors.initials: T
authors.lastname: Kawasaki
authors.forename: T
authors.initials: T
authors.lastname: Kimura
authors.forename: Y
authors.initials: Y
authors.lastname: Yamashita
authors.forename: H
authors.initials: H
authors.lastname: Someda
authors.forename: H
authors.initials: H
authors.lastname: Uchino
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008961:Models, Structural; D011169:Portal Vein / Q000502:physiology*; D011237:Predictive Value of Tests; D012039:Regional Blood Flow; D014463:Ultrasonography