摘要： 目的 应用实时双平面成像技术观察正常胎儿主动脉瓣的瓣膜结构，探讨测量不同孕周胎儿主动脉瓣环面积的临床意义。方法 选取2018年6月至2019年6月在我院进行产前胎儿心脏超声检查的孕妇180例。应用常规二维超声心动图和实时双平面成像技术观察胎儿主动脉瓣，记录图像采集时间和成像率并比较分析。实时双平面成像技术测量胎儿主动脉瓣环面积，线性回归分析主动脉瓣环面积与孕周关系。结果 常规二维超声心动图和实时双平面成像技术的主动脉瓣成像率和采集时间比较差异均有统计学意义（均P < 0.05）。实时双平面成像技术测量的主动脉瓣环面积与孕周正相关（P < 0.05）。结论 实时双平面成像技术更容易观测胎儿主动脉瓣结构，主动脉瓣环面积与孕周正相关。实时双平面成像技术测量主动脉瓣环面积可为临床上评估胎儿心脏发育提供重要的参考。

实时双平面成像技术测量正常胎儿主动脉瓣环面积的临床意义

王彧, 孙雪, 张颖

中国医科大学附属盛京医院超声科, 沈阳 110004

收稿日期:2019-10-15出版日期:2020-07-30发布日期:2020-07-02
通讯作者:张颖E-mail:zhangying_cmu@sina.com
作者简介:王彧(1986-),女,主治医师,博士研究生.
基金资助:沈阳市科学技术计划（F16-206-9-11）；中国医科大学青年骨干支持计划（QGZD2018065）


关键词: 实时双平面成像技术, 产前超声, 胎儿心脏, 主动脉瓣环
Abstract: Objective We observed the structure of the normal fetal aortic valve using real-time bi-plane imaging technology,and explored a novel method for measuring the area of aortic valve annulus in fetuses of different gestational ages. Methods We selected 180 pregnant women who underwent prenatal fetal cardiac ultrasound in our hospital from June 2018 to June 2019. Conventional twodimensional echocardiography and real-time bi-plane imaging technology were used to observe the fetal aortic valve,and the image acquisition times and display rates were recorded and comparatively analyzed. The real-time bi-plane imaging technique was used to measure the area of the fetal aortic annulus. We then used linear regression to analyze the relationship between the area of the aortic annulus and the gestational age. Results When imaging the aortic valve using real-time bi-plane imaging technology,imaging rate was significantly higher and acquisition time was significantly shorter compared to conventional two-dimensional echocardiography (P < 0.05). The area of aortic annulus measured by real-time bi-plane imaging technology was positively correlated with gestational age (P < 0.05). Conclusion Real-time bi-plane imaging technology facilitates observation of the structure of the fetal aortic valve,and the area of the aortic valve annulus is positively correlated with gestational age. The measurement of aortic annulus area using real-time bi-plane imaging technology provides an important reference for clinical assessment of fetal heart development.
Key words: real-time bi-plane imaging technique, prenatal ultrasound, fetal heart, aortic valve annulus
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