Doppler echocardiography: prosthetic aortic valve area by time-velocity integral (TVI)
doppler echocardiography: prosthetic aortic valve area by time-velocity integral (tvi)
Doppler echocardiography: prosthetic aortic valve area by time-velocity integral (TVI) (procedure)
doppler echocardiography: prosthetic aortic valve area by time-velocity integral (tvi) (procedure)