Laudij, J.A.M.

velocity doppler hypoplasia lung hypoplasia waveform study venou volume branch fetus flow velocity waveforms pregnancy parameter ultrasound circulation obstet blood artery diastolic systolic gestation measurement middle value change oligohydramnio peak systolic velocity screening development difference ratio wladimiroff jw growth women chapter gynecol circumference breathing movements doppler velocimetry prediction increase peak diastolic velocity recording level lung development subset group assessment figure heart result lung volume thoracic wladimiroff breathing vessel weight movement hepatic volume membrane syndrome end-diastolic velocity rupture biometric velocimetry hepatic combination birth table resistance netherland end-diastolic state blood flow lung growth laudy analysis pressure obstetric cycle