Ward, J M Detection of aortic insufficiency by pulse Doppler echocardiography. [electronic resource] - Journal of clinical ultrasound : JCU Feb 1977 - 5-10 p. digital Publication Type: Journal Article ISSN: 0091-2751 Standard No.: 10.1002/jcu.1870050103 doi Subjects--Topical Terms: Aortic Valve Insufficiency--diagnosisDoppler EffectEchocardiographyHeart AuscultationHumansRheology