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首页> 外文期刊>Open Journal of Obstetrics and Gynecology >The Use of a High Frequency Linear Transducer in the Assessment of Fetal Anatomy at the Routine 11 to 13 + 6-Week Scan among Chinese Population
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The Use of a High Frequency Linear Transducer in the Assessment of Fetal Anatomy at the Routine 11 to 13 + 6-Week Scan among Chinese Population

机译：高频线性换能器在例行的11到13 + 6周例行扫描中评估胎儿的解剖结构

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Objectives: To determine if the use of high frequency linear transducer (HFLT) in addition to conventional curvilinear transducer (CCT) aids assessment of fetal cardiac and non-cardiac anatomy in the first trimester. Methods: Transabdominal CCT (4 - 8 MHz) followed by HFLT (9 MHz) was used to study prospectively the visualization rate of basic and optional anatomical structures according to international guidelines. McNemar and Chi-square test were used to compare correlated and independent proportions respectively. Postnatal outcomes were traced. Results: Comparing with CCT alone, additional use of HFLT did not improve the completion rate of basic anomaly screen (95.0% vs. 97.0%, p = 0.5) in the 101 women studied, but it improved the visualization rate of some optional structures including lens (57.4% vs. 73.3%), three-vessel view (3 VV) (17.8% vs. 48.5%), left ventricular outflow tract (17.8% vs. 51.5%), kidneys (8.9% vs. 47.5%), and umbilical artery (86.1% vs. 93.1%) (all p < 0.05). Favourable fetal position was associated with a better visualisation of four-chamber view and 3VV (p < 0.05). Conclusions: Our findings supported that the use of HFLT in addition to CCT does not improve the completion of basic anomaly screen, nor does it achieve a high visualisation rate of different cardiac views in the first trimester.
机译：目的：确定除常规曲线换能器（CCT）之外还使用高频线性换能器（HFLT）是否有助于评估妊娠早期胎儿的心脏和非心脏解剖结构。方法：采用腹部CCT（4-8 MHz），然后进行HFLT（9 MHz），根据国际准则前瞻性研究基本和可选解剖结构的可视化率。 McNemar和卡方检验分别用于比较相关比例和独立比例。追踪产后结果。结果：与单独的CCT相比，额外使用HFLT并不能提高101名研究女性的基本异常筛查的完成率（95.0 ％vs. 97.0 ％，p = 0.5），但可以提高某些可选检查的可视化率结构包括晶状体（57.4 ％vs.73.3 ％），三血管视图（3 VV）（17.8 ％vs.48.5 ％），左心室流出道（17.8 ％vs.51.5 ％），肾脏（分别为8.9％和47.5％，以及脐动脉（86.1％和93.1％）（所有p <0.05）。有利的胎儿位置与更好的四腔视图和3VV可视化相关（p <0.05）。结论：我们的研究结果支持，除了CCT之外，使用HFLT不能改善基本异常筛查的完成率，也不能在孕早期实现不同心脏视图的高可视化率。

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