Fig. 1From: Contrast‐enhanced ultrasound imaging can be used to evaluate fetal cerebral perfusion: potential implications for fetal surgeryExperimental conditions. a Fetal sheep (n=6) were cannulated via their umbilical vessels, connected to a low resistance oxygenator circuit and supported in a fluid filled environment. b The fluid filled bag was partially drained and insufflated to 8 mm Hg with carbon dioxide to simulate fetal surgery.c The amniotic cavities of time-dated ewes (n=4) were insufflated with carbon dioxide to simulate fetal surgeryBack to article page