First trimester placental volume and three dimensional power doppler ultrasonography in type I diabetic pregnancies.

Objective: This study aimed to investigate the placental volume and three dimensional (3D) power Doppler vascularization in type I diabetic pregnancies during the first trimester

Methods: 3D-power Doppler ultrasonography of the placenta was performed at 11+0-13+6 weeks in 32 pregnancies complicated by type I diabetes. Placental volume, vascularization index (VI), flow index (FI), and vascularization flow index (VFI) were calculated using a standardized setting.

Results: In nine pregnancies, a poor first trimester glycemic control was present as expressed by HbA1c levels  ≥ 7%, whereas in the remaining 23 mothers, the HbA1c concentrations were <7%.

Are there any differences in three-dimensional placental vascular indices obtained using conventional power Doppler and high-definition flow imaging?

Objective: The purpose of this study was to determine whether there are differences in values and reproducibility of three-dimensional (3D) vascular indices obtained on placental volumes using power Doppler (PD) or high-definition flow imaging (HDFI) techniques.

Methods: A prospective study was performed on 121 uncomplicated singleton pregnancies at 11 + 0 to 13 + 6 weeks of gestation. Two placental volumes were acquired from each pregnancy.

An algorithm based on OmniView technology to reconstruct sagittal and coronal planes of the fetal brain from volume datasets acquired by three-dimensional ultrasound.

Objective: To describe a novel algorithm, based on the new display technology 'OmniView', developed to visualize diagnostic sagittal and coronal planes of the fetal brain from volumes obtained by three-dimensional (3D) ultrasonography.

Methods: We developed an algorithm to image standard neurosonographic planes by drawing dissecting lines through the axial transventricular view of 3D volume datasets acquired transabdominally. The algorithm was tested on 106 normal fetuses at 18-24 weeks of gestation and the visualization rates of brain diagnostic planes were evaluated by two independent reviewers.

Effects of maternal cigarette smoking on placental volume and vascularization measured by 3-dimensional power Doppler ultrasonography at 11+0 to 13+6 weeks of gestation.

Objective: We sought to establish the effect of maternal smoking on placental volume and vascularization in early gestation.

Study Design: Three-dimensional power Doppler ultrasonography of the placenta was performed at 11+0 to 13+6 weeks in 80 pregnancies categorized according to cigarette consumption: group A never smoked, B smoking < 10 cigarettes/day, C smoking 10-20 cigarettes/day, and D smoking > 20 cigarettes/day. Using a standardized setting, placental volume and vascularization index (VI), flow index (FI), and vascularization flow index (VFI) were calculated.