title: Doppler echocardiographic assessment of aortic stenosis using the peak velocity ratio.
authors.affiliation: Department of Medicine, Beth Israel Medical Center, New York, New York 10003.
authors.forename: M
authors.initials: M
authors.lastname: Berger
authors.forename: S R
authors.initials: SR
authors.lastname: Hecht
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001024:Aortic Valve Stenosis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D002302:Cardiac Output; D004452:Echocardiography / Q000379:methods*; D006801:Humans; D008875:Middle Aged; D014463:Ultrasonography