Regurgitant fraction:VFr:Pt:Aortic valve:Qn:US.doppler
regurgitant fraction:vfr:pt:aortic valve:qn:us.doppler
Regurgitant fraction:VFr:Pt:Aortic valve:Qn:US.doppler
regurgitant fraction:vfr:pt:aortic valve:qn:us.doppler