二维、三维超声技术检测正常胎儿胸腺的研究  

Prenatal assessment of the fetal thymus： utility of 2D and 3D ultrasound healthy fetuses

作　　者：李凌[1] 周启昌[1] 邹琳[1] 蒲大荣[1] 章鸣[1] Joshua Copel Mert Bahtiyar 

机构地区：[1]中南大学湘雅二医院超声科,长沙410001 [2]Maternal-Fetal Medicine of Yale University Medical School

出　　处：《中华超声影像学杂志》2011年第1期53-57,共5页Chinese Journal of Ultrasonography

基　　金：基金项目：国家自然科学基金资助项目（30970838）;湖南省自然科学基金资助项目（08JJ3059）

摘　　要：目的 建立胎儿胸腺二维各径线和三维体积的正常值,并比较胎儿胸腺的二维、三维超声测量.方法 采集567例正常胎儿胸腺的二维超声测值,包括最大横径、前后径、上下径、最大横截面积及三维超声体积.结果 567例胎儿中541例胎儿满意获得胎儿胸腺的最大横径、前后径、上下径和最大横截面积和体积.胎儿胸腺二维各径线、三维体积均随孕周的增加而增加,与孕周均呈直线相关,三维体积与孕周的相关性明显高于二维超声测值（P＜0.05）.结论 本研究建立了胎儿胸腺二维超声面积、周长、直径、横径和三维超声体积的正常参考值.三维超声测量胎儿胸腺体积与孕周相关性更高,提示较二维超声测量更为准确.Objective To establish the normative data of the 2D and 3D ultrasound （US）measurements of the developing fetal thymus and comparing the 2DUS and 3DUS measurements of the fetal thymus. Methods The normal fetuses＇ thymus of 567 cases were assessed, and maximum transverse diameter（MTD）,antero posterior diameter （APD）, suprainferior diameter （SID）, maximum transverse area （MTA） were measured by 2DUS,and thymic volume（TV） was measured by 3DUS. Results 2DUS,3DUS assessments of the fetal thymic MTD, APD, SID, MTA and TV were possible in 541 of 567 normal singletons. The fetal thymic 2D diameters/area and 3D volume grow with the gestational age（GA） in linear correlation. The 3D-US TV measurements and GA was significantly higher than that of any individual 2DUS measurements and GA （ P 〈0.05）. Conclusions This study presents the normative data of the 2DUS and 3DUS measurements of the developing fetal thymus. 3DUS fetal thymus volume is more significantly correlated to GA than the other 2DUS measurements, which indicates 3DUS measurement of the fetal thymus is more accurate than that of 2DUS.

关 键 词：超声检查 产前 胎儿 胸腺 

分 类 号：R445.1[医药卫生—影像医学与核医学]