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中华医学超声杂志(电子版) ›› 2019, Vol. 16 ›› Issue (05) : 380 -385. doi: 10.3877/cma.j.issn.1672-6448.2019.05.016

所属专题: 文献

妇产科超声影像学

三维超声断层成像技术评价胎儿肛门直肠发育的价值
广旸1, 何文1,(), 张红霞1, 张雨康1, 宁彬1, 于腾飞1   
  1. 1. 100160 首都医科大学附属北京天坛医院超声科
  • 收稿日期:2018-10-08 出版日期:2019-05-01
  • 通信作者: 何文

Three-dimensional ultrasonography for evaluation of development of fetal anal sphincter

Yang Guang1, Wen He1,(), Hongxia Zhang1, Yukang Zhang1, Bin Ning1, Tengfei Yu1   

  1. 1. Department of Ultrasound, Beijing Tiantan Hospital, Capital Medical University, Beijing 100160, China
  • Received:2018-10-08 Published:2019-05-01
  • Corresponding author: Wen He
  • About author:
    Corresponding author: He Wen, Email:
引用本文:

广旸, 何文, 张红霞, 张雨康, 宁彬, 于腾飞. 三维超声断层成像技术评价胎儿肛门直肠发育的价值[J]. 中华医学超声杂志(电子版), 2019, 16(05): 380-385.

Yang Guang, Wen He, Hongxia Zhang, Yukang Zhang, Bin Ning, Tengfei Yu. Three-dimensional ultrasonography for evaluation of development of fetal anal sphincter[J]. Chinese Journal of Medical Ultrasound (Electronic Edition), 2019, 16(05): 380-385.

目的

应用三维超声断层成像技术(TUI)评价产前超声对胎儿肛门直肠发育的诊断价值,从而为产前超声诊断肛门闭锁提供更加丰富的诊断信息。

方法

选取2017年6月至2018年7月首都医科大学附属北京天坛医院315例正常单胎孕妇,年龄23~40岁,平均年龄(29±3)岁,孕周为19~40周。应用TUI技术分别测量胎儿肛门括约肌直径(ASD)、肛管直径(ACD)及肛管长径(ACL)。各测量值与孕周之间的关系采用Pearson相关分析,取得ASD、ACD及ACL与孕周的相关性,建立回归方程及曲线。采用组内相关系数(ICC)及其95%可信区间(95% CI)观察对ASD、ACD及ACL测量的可重复性,以此评价测量的可靠性。

结果

所有胎儿应用TUI技术胎儿肛门直肠部位显示率为97.8%(308/315),Pearson相关分析结果表明,正常胎儿ASD、ACD及ACL与胎儿孕周呈正相关。回归方程分别为:ASD:Y=-0.001X2+0.421X-1.726(r=0.83,P<0.01);ACD:Y=0.418X-4.207(r=0.89,P<0.01);ACL:Y=0.526X-1.062(r=0.87,P<0.01)。

结论

TUI技术评价胎儿肛门直肠结构的发育可作为产前观察胎儿肛门直肠结构的一种方法,应用该方法可以提高胎儿肛门直肠结构的显示率。

Objective

To investigate the capability of tomography ultrasound (TUI) in evaluating the development of the normal anorectal structure to provide a reference for prenatal diagnosis of imperforate anus.

Methods

From June 2017 to July 2018, 315 singleton pregnant women at 19-40 weeks of gestational age were selected from Beijing Tiantan Hospital, and they ranged in age from 23 to 40 years, with an average age of 29±3 years. The TUI technique was applied to measure the fetal anal sphincter diameter (ASD), anal canal diameter (ACD), and anal canal length (ACL). The correlation between ASD, ACD, or ACL and gestational age was analyzed by Pearson correlation analysis, and the regression equation and curve were established. The intraclass correlation coefficient (ICC) and 95% confidence interval (CI) were used to evaluate the repeatability of the measurement of ASD, ACD, and ACL.

Results

The display rate of fetal anorectum in all fetuses by the TUI technique was 97.8% (308/315). Pearson correlation analysis showed that the normal fetal ASD, ACD, and ACL were positively correlated with the gestational age of the fetus, and the regression equations are: ASD, Y=-0.001X2+ 0.421X-1.726 (r=0.83, P<0.01); ACD, Y=0.418X-4.207 (r=0.89, P<0.01); and ACL, Y=0.526X-1.062 (r=0.87, P<0.01).

Conclusion

TUI for assessment of fetal anorectum is feasible. This method can be applied to improve the display rate of fetal anorectum.

图1 应用三维超声断层成像技术获得孕24周胎儿肛门括约肌横切面及其周围软组织结构的一系列平行切面图像。会阴部中央可显示"靶环征",即中心部为高回声,周边为环状低回声带,最外周为环状高回声线(箭头所示)
图2 应用三维超声断层成像技术获得孕24周胎儿会阴部肛管矢状切面及其周围组织结构的一系列平行切面图像。可见中心部为线状强回声,周边为中等回声管状结构的肛管(箭头所示)
图3 胎儿肛门括约肌直径与孕周相关性的散点图。直线分别代表均数及95%置信区间
图4 胎儿肛管直径与孕周相关性的散点图。直线分别代表均数及95%置信区间
图5 胎儿肛管长径与孕周相关性的散点图。直线分别代表均数及95%置信区间
表1 308例正常胎儿肛门括约肌直径、肛管直径、肛管长径按孕周(19~40周)统计结果
表2 胎儿肛门括约肌直径、坐骨间距、直肠直径、肛管直径及肛管长径的ICC值及95%CI
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