Fig. 1

Flow acquisitions in the fetal descending aorta (DAo) and umbilical vein (UV). Balanced steady-state free precession localizers (left) were used to plan phase-contrast acquisitions (right). Localizers were acquired in several planes to confirm that flow acquisitions were perpendicular to the vessel of interest. White lines indicate the descending aorta (top) and umbilical vein (bottom) scan planes and arrows indicate the respective vessel of interest