Blood flow velocity.systole.max/Blood flow velocity.diastole.max:VelRto:Pt:Pulmonary vein.left upper:Qn:US.doppler.derived
blood flow velocity.systole.max/blood flow velocity.diastole.max:velrto:pt:pulmonary vein.left upper:qn:us.doppler.derived
PV-LU Vmax sys/dias DOP.der
pv-lu vmax sys/dias dop.der