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