title: Evaluation of blood flow patterns of true and false lumens in dissecting aneurysms using MR phase-contrast techniques.
abstract: The magnetic resonance phase-contrast technique for the measurement of flow velocity and volume in true and false lumens was studied in six patients with chronic dissecting aneurysms. Phase-contrast images were obtained at a level perpendicular to the dissecting aneurysms of the descending aorta. As the maximum diameter of aneurysms increased, the ratio of the cross-sectional area of the false to the true lumen increased and the peak average velocity in the true lumen during systole was decreased. This technique proved invaluable for determining prognosis and operability for this condition.
authors.affiliation: Third Department of Internal Medicine, Chiba University School of Medicine, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Inoue
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: Y
authors.initials: Y
authors.lastname: Masuda
authors.forename: K
authors.initials: K
authors.lastname: Yoshida
authors.forename: H
authors.initials: H
authors.lastname: Imai
authors.forename: Y
authors.initials: Y
authors.lastname: Imazeki
authors.forename: Y
authors.initials: Y
authors.lastname: Ishizuya
authors.forename: M
authors.initials: M
authors.lastname: Koga
authors.forename: H
authors.initials: H
authors.lastname: Kato
authors.forename: H
authors.initials: H
authors.lastname: Ikehira
authors.forename: Y
authors.initials: Y
authors.lastname: Tateno
mesh_terms: D000368:Aged; D000784:Aortic Dissection / Q000175:diagnosis / Q000503:physiopathology*; D017541:Aneurysm, False / Q000175:diagnosis / Q000503:physiopathology*; D017545:Aortic Aneurysm, Thoracic / Q000175:diagnosis / Q000503:physiopathology*; D001783:Blood Flow Velocity; D002908:Chronic Disease; D004562:Electrocardiography; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D019047:Phantoms, Imaging; D011379:Prognosis