Fig. 3.
(A-I)The SCS videos were decomposed into pictures, and the contents were observed in sequence according to the scanning sequence12: Stomach (STO), descending aorta (DAO), inferior vena cava (IVC), umbilical vein (UV), ductus venosus (DV), hepatic vein (HV), left ventricular (LV), left atrium (LA), right ventricular(RV), right atrium (RA), foramen ovale (FO), pulmonary vein (PV), left ventricular outflow tract (LVOT), superior vena cava (SVC), left pulmonary artery (LPA), right pulmonary artery (RPA), aorta (AO), pulmonary artery (PA), arterial duct (DA), aortic arch (ARCH), trachea (T), left innominate vein (LIV), left subclavian artery (LSA), left common carotid artery (LCCA), brachiocephalic trunk (BT)