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首页> 外文期刊>Journal of Clinical Ultrasound: JCU >Placental and spiral artery volume and gray-scale value assessment via 3-dimensional sonography in the second trimester.
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Placental and spiral artery volume and gray-scale value assessment via 3-dimensional sonography in the second trimester.

机译：妊娠中期通过3维超声检查胎盘和螺旋动脉的容积以及灰度值。

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摘要

PURPOSE: Extreme placental size has been associated with abnormal pregnancy outcomes. The purpose of this study was to establish normal values for placental and spiral artery volume and gray-scale value as assessed via 3-dimensional (3D) sonography in the second trimester. METHODS: The entry criterion was a documented singleton pregnancy at 14-25 weeks' gestation. Patients with normal pregnancy outcome were stratified into 6 subgroups representing 2-week intervals. Automatic 3D sonographic acquisition of the placental and spiral artery volume and gray-scale value, expressed as a percentage, was obtained. RESULTS: Out of 199 patients with normal pregnancy outcome, the placental volume was between 77.7 and 213.9 cm(3) and the gray-scale value was between 28.6 and 29.2 cm(3) (depending on gestational age). The spiral artery volume adjacent to placenta was between 47.9 and 108.7 cm(3), and the gray-scale value was between 27.5 and 29.5 cm(3). Statistical analysis in each subgroup of patients revealed a significant difference between placental and spiral artery volumes but no difference when the gray-scale value was compared. CONCLUSIONS: We defined normal placental and spiral artery volume and gray-scale value in the second trimester of normal pregnancy using 3D sonography.
机译：目的：胎盘过大与异常妊娠结局有关。这项研究的目的是建立妊娠中期通过3维（3D）超声检查评估的胎盘和螺旋动脉容积以及灰度值的正常值。方法：入组标准为妊娠14-25周时单胎妊娠的记录。具有正常妊娠结局的患者分为6个亚组，代表2周间隔。获得了胎盘和螺旋动脉体积的自动3D超声图像采集以及以百分比表示的灰度值。结果：在199例妊娠正常的患者中，胎盘体积在77.7至213.9 cm（3）之间，灰度值在28.6至29.2 cm（3）之间（取决于胎龄）。邻近胎盘的螺旋动脉容积在47.9和108.7 cm（3）之间，灰度值在27.5和29.5 cm（3）之间。每个亚组患者的统计分析表明，胎盘和螺旋动脉容积之间存在显着差异，但在比较灰度值时无差异。结论：我们使用3D超声检查定义了正常妊娠中期的正常胎盘和螺旋动脉容积以及灰度值。

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