Regurgitant fraction:VFr:Pt:Aortic valve:Qn:US.doppler
regurgitant fraction:vfr:pt:aortic valve:qn:us.doppler
Regurgitant fraction:Volume Fraction:To identify measures at a point in time:Aortic valve:Quantitative:Ultrasound.doppler
regurgitant fraction:volume fraction:to identify measures at a point in time:aortic valve:quantitative:ultrasound.doppler