Assessment of early chorionic circulation by three-dimensional power Doppler
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T. Hafner
Abstract
Three-dimensional power Doppler sonography is a unique instrument that enables assessment of vascular signals within the whole investigated area. Hemodynamical changes included in the process of early placentation are one of the most exciting topics in investigation of early human development. This investigation was designed as an observational cross-sectional study. A group of 25 patients in gestational age five to eleven weeks were recruited for the study. After acquirement of the volume containing three-dimensional power Doppler data of the pregnant uterus, the signals belonging to the chorion were isolated. Vascular 3D measurements were undertaken through 3D color/power histogram and expressed by Vascularization Index (VI) and Vascularization Flow 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 gradual increment through the investigation period. This investigation produced results confirming gradual augmentation of the loci and intensity of the intervillous flow in pregnancies between five and eleven gestational weeks.
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
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- Congress Calendar
- Erratum
- Roster of Perinatal Medicine
Artikel in diesem Heft
- 3D Ultrasound and Perinatal Medicine
- Screening for uterine abnormalities by three-dimensional ultrasound improves perinatal outcome
- Three-dimensional power Doppler in study of embryonic vasculogenesis
- The assessment of placental blood vessels by three-dimensional power Doppler ultrasound
- Assessment of early chorionic circulation by three-dimensional power Doppler
- Limb deformities and three-dimensional ultrasound
- The assessment of fetal brain morphology and circulation by transvaginal 3D sonography and power Doppler
- Prenatal diagnosis: what does four-dimensional ultrasound add?
- Three-dimensional sonoembryology
- Three-dimensional ultrasound - a useful imaging technique in the assessment of neonatal brain
- Events from ovulation to implantation studied by three-dimensional ultrasound
- Multiple congenital contractures (Congenital multiple arthrogryposis)
- Two-dimensional and three-dimensional ultrasound of fetal anasarca: the glass baby
- Congress Calendar
- Erratum
- Roster of Perinatal Medicine
