产前二维及三维超声测量正常胎儿胸腺

发布时间：2018-01-31 22:00

本文关键词： 超声检查产前胸腺胎儿　出处：《中国介入影像与治疗学》2017年01期 　论文类型：期刊论文

【摘要】：目的探讨产前二维及三维超声评估胎儿胸腺的最佳指标。方法对360胎孕22~39周正常单胎胎儿,应用二维超声检测胎儿胸腺的横径、前后径、周长、面积,三维超声检测胎儿胸腺体积。采用线性回归分析各测量指标与孕周的关系。并采用Steiger's t检验比较各指标与孕周的相关性。结果胎儿胸腺的横径、前后径、周长、面积及体积均随孕周的增加而增大,与孕周均呈线性相关。回归方程为:横径(cm)=-1.98+0.16×孕周;前后径(cm)=-0.80+0.08×孕周;周长(cm)=-5.00+0.42×孕周;面积(cm2)=-1.49+0.35×孕周;体积(ml)=-2.12+0.45×孕周(P均0.01)。Steiger's t检验显示,三维超声检测胎儿胸腺体积与孕周的相关性明显优于其他指标(P0.01)。结论对孕22~39周正常胎儿,采用三维超声测量胎儿胸腺体积是评估胸腺发育情况的最佳指标。
[Abstract]:Objective to evaluate the best indexes of fetal thymus by two dimensional and three dimensional ultrasound before delivery. Methods the transverse diameter, anteroposterior diameter and circumference of fetal thymus were measured by two-dimensional ultrasound in normal single fetus at 2239 weeks gestation of 360 fetuses. Area. Three-dimensional ultrasound was used to measure the volume of fetal thymus. Linear regression analysis was used to determine the relationship between the measured indexes and gestational weeks. Steiger's was used. T test was used to compare the correlation between the indexes and gestational weeks. The anteroposterior diameter, circumference, area and volume increased with the increase of gestational weeks, and were linearly correlated with gestational weeks. The anteroposterior diameter was 0.80 0.08 脳 gestational week. The circumference was 5.00 0.42 脳 gestational weeks. Area: cm _ 2 ~ (-1.49) 0.35 脳 gestational weeks; The volume was 2.120.45 脳 gestational week P 0.01g 路Steigerger s t test showed. The correlation between fetal thymus volume and gestational week was significantly better than that of other indexes (P 0.01). Conclusion the normal fetus at 2239 weeks gestation is better than other indexes. Measurement of fetal thymus volume by three-dimensional ultrasound is the best index to evaluate thymus development.
【作者单位】：南京医科大学附属妇产医院超声科;
【分类号】：R714.5;R445.1
【正文快照】： 胸腺是人体重要的免疫器官。近年来,胎儿胸腺发育不良与发生其他器官畸形等相关疾病的相关性受到广泛关注。高分辨率超声可清晰显示中孕期以后的胎儿胸腺,为产前超声评估胎儿胸腺发育并诊断胎儿胸腺发育不良提供了一种便捷、有效的方法[1]。本研究拟应用二维、三维超声对孕22~

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