echocardiography: diastolic regurgitant half time of aortic valve at end of expiration
echocardiography: diastolic regurgitant half time of aortic valve at end of expiration
echocardiography: diastolic regurgitant half time of aortic valve at end of expiration (procedure)
echocardiography: diastolic regurgitant half time of aortic valve at end of expiration (procedure)