Fig. 1
a: Normal course of the fetal circulation. b, c: Two examples of segmented whole-heart angiographic images in the left ventral view, derived from time-averaged phase contrast data (gestational age: B = 128 days, C = 116 days). Scale bars indicate relative size of fetal structures, with standard anatomy labeled. UV: umbilical vein; DV: ductus venosus; IVCd: distal inferior vena cava; IVCp: proximal inferior vena cava; SVC: superior vena cava; RA: right atrium; FO: foramen ovale; LA: left atrium; RV: right ventricle; LV: left ventricle; MPA: main pulmonary artery; DA: ductus arteriosus; AAo: ascending aorta; DAo: descending aorta