echocardiography: diastolic regurgitant half time of prosthetic aortic valve
echocardiography: diastolic regurgitant half time of prosthetic aortic valve
echocardiography: diastolic regurgitant half time of prosthetic aortic valve (procedure)
echocardiography: diastolic regurgitant half time of prosthetic aortic valve (procedure)