title: The preoperative and operative assessment of aortic regurgitation. Cineaortography vs. electromagnetic flowmeter.
mesh_terms: D000328:Adult; D001022:Aortic Valve Insufficiency / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D001027:Aortography; D001783:Blood Flow Velocity; D006328:Cardiac Catheterization; D004571:Electrokymography; D006326:Heart Auscultation; D006801:Humans; D012039:Regional Blood Flow; D013997:Time Factors