echocardiography: left ventricular ejection time (LVET) of aortic valve at end of expiration
echocardiography: left ventricular ejection time (lvet) of aortic valve at end of expiration
echocardiography: left ventricular ejection time (LVET) of aortic valve at end of expiration (procedure)
echocardiography: left ventricular ejection time (lvet) of aortic valve at end of expiration (procedure)