A wave duration:Time:Pt:Pulmonary vein:Qn:US.doppler.PW
a wave duration:time:pt:pulmonary vein:qn:us.doppler.pw
A wave duration:Time:To identify measures at a point in time:Pulmonary vein:Quantitative:Ultrasound.doppler.PW
a wave duration:time:to identify measures at a point in time:pulmonary vein:quantitative:ultrasound.doppler.pw