頁籤選單縮合
題 名 | Assessment of Placental Volume and Vascularization at 11-14 Weeks of Gestation in a Taiwanese Population Using Three-Dimensional Power Doppler Ultrasound |
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作 者 | Wang, Hsing-i; Yang, Ming-jie; Wang, Peng-hui; Wu, Yi-cheng; Chen, Chih-yao; | 書刊名 | Journal of the Chinese Medical Association |
卷 期 | 77:12 2014.12[民103.12] |
頁 次 | 頁648-652 |
分類號 | 417.143 |
關鍵詞 | Gestational week; Placental volume; Three-dimensional power Doppler ultrasound; VOCAL; |
語 文 | 英文(English) |
英文摘要 | Background: The placental volume and vascular indices are crucial in helping doctors to evaluate early fetal growth and development. Inadequate placental volume or vascularity might indicate poor fetal growth or gestational complications. This study aimed to evaluate the placental volume and vascular indices during the period of 11e14 weeks of gestation in a Taiwanese population. Methods: From June 2006 to September 2009, three-dimensional power Doppler ultrasound was performed in 222 normal pregnancies from 11e14 weeks of gestation. Power Doppler ultrasound was applied to the placenta and the placental volume was obtained by a rotational technique (VOCAL). The three-dimensional power histogram was used to assess the placental vascular indices, including the mean gray value, the vascularization index, the flow index, and the vascularization flow index. The placental vascular indices were then plotted against gestational age (GA) and placental volume. Results: Our results showed that the linear regression equation for placental volume using gestational week as the independent variable was placental volume ¼ 18.852 GA 180.89 (r ¼ 0.481, p < 0.05). All the placental vascular indices showed a constant distribution throughout the period 11e14 weeks of gestation. A tendency for a reduction in the placental mean gray value with gestational week was observed, but without statistical significance. Conclusion: All the placental vascular indices estimated by three-dimensional power Doppler ultrasonography showed a constant distribution throughout gestation. |
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