Quantitative Analysis of Placental Vasculature by Three-Dimensional Power Doppler Ultrasonography in Normal Pregnancies From 12 to 40 Weeks of Gestation

Placental volume and three‐dimensional power Doppler analysis in prediction of pre‐eclampsia and small for gestational age between Week 11 and 13 weeks and 6 days of gestation

“…We compared our results for the 3D-PD indices with the results of Rizzo et al (2007) and de Paula et al (2009) and found them very similar either as stated in the article itself (de Paula et al, 2009) or by inspection of the figures (Rizzo et al, 2007). This resemblance emphasizes the fact that 3D-PD indices are accurate and reproducible.…”

Reprodutibilidade interobservador dos índices vasculares do Doppler de amplitude tridimensional do embrião entre 7 e 10 semanas e 6 dias de gestação

“…The 3D power Doppler vascular indices have been applied in the evaluation of the placental vascularization at the second and third gestational trimesters, presenting a proven intra-and interobserver reproducibility (4,5) . Recently, a good intraobserver reproducibility was also demonstrated for vascular indices of the intervillous and uteroplacental circulation between the 5th and 12th gestational weeks (6) ; however, no description is found about their reproducibility in the evaluation of the embryo's vascularization at the first gestational trimester.…”

Examinations of placental three-dimensional power Doppler indices in pregnancies complicated by diabetes mellitus and intrauterine growth restriction

“…The control group and the diabetic groups had overlaps of VI, FI, VFI values; hence 3-DPD indices are not diagnostic in diabetes. In a previous study by de Paula et al [57] all placental vascular indices showed constant values, while increased volume expansion of placenta was observed in connection with GA. In diabetes the placental vascular alteration is a consequence of change in maternal glucose metabolism [17,61].…”

“…The three planes of acquired placental volume were explored to localize the zone where the highest vascular density was found by PD mode [59]. The type of sonobiopsy (called "Mercé-type sonobiopsy") that we used is a reproducible, validated method [53,54,57], and by obtaining a representative sample of the placental tree it is applicable throughout the whole pregnancy in contrary to other methods, in which the entire placenta needs to be visualized [55].…”