A two-perfusion IVIM model to account for both villous and trophoblast perfusion in the human placenta

The placenta may incur several pathologies during fetal growth due to perfusion impairment such as Fetal-Growth-Restriction (FGR) and the accretism. Two-perfusion IVIM model (with f1, D1*, f2, D*2 and D parameters) and IVIM model were used to fit data. DWIs were corrected for distributed noise χ. Mean-values differences of the quantified parameters in diseased and healthy placentas were analyzed by ANOVA test. The slower f2 perfusion fraction associated with trophoblastic perfusion was significantly lower in FGR compared to normal placenta, whereas the faster f1, quantifying villi perfusion fraction, was higher in the accretism compared to healthy placenta zone.