Three dimensional sonography can improve accuracy and success rate of nuchal translucency measurement in pregnancy between 10 and 11 weeks gestation. In a series of 120 pregnancies, Kurjac and Kupesic were able to obtain the midsagittal section and measure nuchal translucency in 100 percent of cases using 3D transvaginal sonography. Using standart 2D sonography this was possible in only 85 percent of cases. Due to the superb quality of images, 3D sonography enables detection of developmental anomalies. 3D sonography will certainly improve early detection of fetal anomalies, and possibly become the screening method for them. In addition, 3D sonography produced better intra-observer reproducibility of results. 3D sonography with its potential for complex and sophisticated post processing of image has proved to be useful tool in experimental embryology. Using a special off-line imaging computer device blasts et al, produced a series of ex vivo obtained images of the human embryo, emphasizing development of the brain cavities during the first trimester. This new technology has moved embryology from postmortem studies to in vivo environment.
Development on the ultrasound technology enabled us to expand investigations early placental vascular supply. 3D power Doppler is a unique instrument that enables assessment of vascular signals within the whole investigated area. Hemodynamical changes included the process of early placentation are one of the most exiting topics in investigation of early human development. This investigation was designed as an observational cross-sectional study. After acquirement of the volume containing 3D power Doppler data of the pregnant uterus, the signals belonging to the chorion were isolated. Vascular 3D measurement were undertaken through 3D power histogram and expressed by vascularization index (VI) and vascelarization flow of index (VFI). Volume of the chorion increased exponentially throughout the observation period. The VI and VFI positively correlated with the crown-rump length and chorion volume and showed gradal increment through the investigation period. This investigation produced result confirming gradual augmentation of the loci and intensity of the intervillous flow in pregnancies between five and eleven gestation weeks.
Development on the ultrasound technology enabled us to expand investigations early placental vascular supply. 3D power Doppler is a unique instrument that enables assessment of vascular signals within the whole investigated area. Hemodynamical changes included the process of early placentation are one of the most exiting topics in investigation of early human development. This investigation was designed as an observational cross-sectional study. After acquirement of the volume containing 3D power Doppler data of the pregnant uterus, the signals belonging to the chorion were isolated. Vascular 3D measurement were undertaken through 3D power histogram and expressed by vascularization index (VI) and vascelarization flow of index (VFI). Volume of the chorion increased exponentially throughout the observation period. The VI and VFI positively correlated with the crown-rump length and chorion volume and showed gradal increment through the investigation period. This investigation produced result confirming gradual augmentation of the loci and intensity of the intervillous flow in pregnancies between five and eleven gestation weeks.
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