First trimester placental and myometrial blood perfusion measured by 3D power Doppler in normal and unfavourable outcome pregnancies

Measurement of PVI and MVI. A: Placenta and myometrium with high vascularization and flow. 1: tracing of the placenta. Placenta is turned in a horizontal position, borders are traced. 2: tracing of the myometrium. If myometrium was thicker than 1 cm it was measured from its placental attachment up to 1 cm. If its thickness was less than 1 cm this smaller figure was taken for measurement. B: Placenta and myometrium with low vascularization and flow. 1: tracing of the placenta in the identical way as compared to A1 2: tracing of the myometrium.

Intra-observer difference in fifteen patients in the measurement of PVI and MVI using regression plots.

Box and Whisker Plot of placental and myometrial flow and vascularization indices.

ROC-Curves for the detection of PE using PVI, MVI, mean PI at 12 weeks and mean PI at 22 weeks.