Fig. 7

Sonographic images of fetal normal connection and anatomic variants of the intrahepatic portal veins. The normal course of the intrahepatic portal veins (a, b). Different types of portal vein variants: Type 1, portal vein trifurcation (c, d); Type 2, the PRPV originates as the first branch of MPV (e, f); Type 3, the ARPV originates from the LPV (g, h)