Systolic flow/Diastolic flow:VelRto:Pt:Umbilical artery.at placenta^Fetus:Qn:US.doppler
systolic flow/diastolic flow:velrto:pt:umbilical artery.at placenta^fetus:qn:us.doppler
Fet Umb a.at plc Sys flow/Dias DOP
fet umb a.at plc sys flow/dias dop