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Assessment of placental fractional moving blood volume using quantitative three-dimensional power doppler ultrasound

Assessment of placental fractional moving blood volume using quantitative three-dimensional power doppler ultrasound,10.1016/S0301-5629(02)00695-6,Ult

Assessment of placental fractional moving blood volume using quantitative three-dimensional power doppler ultrasound   (Citations: 25)
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To test the hypothesis that the placental fractional moving blood volume is different with advancing gestational age (GA), we assessed the vascularization index (VI), flow index (FI), and vascularization-flow index (VFI) of the placenta in normal pregnancy by using three-dimensional (3-D) power Doppler ultrasound (US). We enrolled 100 healthy pregnant women with gestational age between 20 to 40 weeks for this study. Three-dimensional power Doppler ultrasonography was used to assess the VI, FI and VFI in each case. Our results showed that the linear regression equations for VI, FI and VFI, by using GA as the independent variable, were VI = 0.27107 × GA −4.02748 (r = 0.84, p < 0.0001), FI = 0.56115 × GA + 34.28945 (r = 0.49, p < 0.001), and VFI = 0.15663 × GA −2.53810 (r = 0.82, p < 0.0001), respectively. In addition, the VI, FI and VFI values of the placental flow were also positively correlated with the fetal growth indices, namely, biparietal diameter, occipitofrontal diameter, head circumference, abdominal circumference and estimated fetal weight (all p values < 0.001). In conclusion, our study illustrates that the fractional moving blood volume of the placenta is positively correlated with the increment of gestational age and the fetal growth indices. Our data may be used as a reference in the assessment of the placental fractional moving blood volume using the quantitative 3-D power Doppler US. (E-mail: fchang@mail.ncku.edu.tw)
Journal: Ultrasound in Medicine and Biology - ULTRASOUND MED BIOL , vol. 29, no. 1, pp. 19-23, 2003
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    • ...Yu et al. [13] did not find significant differences in intra and interobserver reproducibility, however these authors used a different technique (manual rotational)...

    Hélio Antonio Guimarães Filhoet al. Reproducibility of three-dimensional power Doppler placental vascular ...

    • ...Yu et al. [14] studied 100 pregnant women between 20 and 40 weeks of pregnancy, observing the behavior of the vascular indices of the three-dimensional power Doppler ultrasonography (3D power Doppler) on the placenta...

    Rômulo Negriniet al. Assessment of placental blood flow between 22 and 34 weeks of gestatio...

    • ...In 2003, Yu et al. analyzed the blood Xow volume from a small part of the placenta using the FIs described by Pairleitner et al., associated with the VOCAL method to obtain a region of interest on the placenta [6]...
    • ...Our preliminary results suggest that a reduction in the placental Xow seen by 3D power Doppler (placental vascular biopsy) might became an earlier marker than the increase in the umbilical artery resistance [6, 8]. So, we continue to learn and consequently to advance towards a more reliable comprehension of this so important fetal attachment...

    Hélio Antonio Guimarães Filhoet al. Placenta: angiogenesis and vascular assessment through three-dimension...

    • ...Recently, Yu et al (14) used this technique to show that the fractional blood...
    • ...Except during the first trimester of pregnancy (11), 3D power Doppler cannot explore the placental vascular tree as a whole (12-14)...
    • ...3D power Doppler not only allows a complete and adequate study of the placental vascular tree through the identification of the different branches of villous vessels (12,13), but produces a quantitative evaluation of the number of vessels by means of the vascularization index and the blood flow by the flow index and vascularization-flow index application (14)...
    • ...Yu et al (14) demonstrated that VI, FI, and VFI intraplacental indices increase with gestational age in normal pregnancies, but do not describe the volume applied and the place selected to obtain a representative sample of placental vascularization...
    • ...We have observed that placental volume obtained by “3D biopsy” increases progressively and is significantly related to gestational age. Similar to Yu et al (14), we found that 3D...

    Luis T. Mercéet al. Assessment of Placental Vascularization by Three-dimensional Power Dop...

    • ...In the study conducted by Yu et al. [8] in 2003 the values of placental vascular indices VI, FI, and VFI were calculated for a fixed, small placental volume...

    Michal Pomorskiet al. Comparative analysis of placental vasculature and placental volume in ...

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