摘要
目的分析大动脉转位(TGA)的产前超声图特征。方法回顾性分析产前超声筛查的11例TGA胎儿在四腔心断面、左、右心室流出道断面、三血管和三血管气管断面的声像图特征。全部病例均经产后超声心动图或尸检证实。结果①11例TGA中(单纯性完全型TGA6例,复合性TGA4例,矫正型TGA1例)除1例漏诊外,其余10例均被产前超声心动图检出;②在左心室和(或)右心室流出道断面上,能显示主动脉和肺动脉呈平行走向(10例),主动脉发自形态学的右心室(8例),肺动脉发自形态学的左心室(9例);③在四腔心断面上,单纯性完全型和矫正型TGA都表现为四腔心对称,而复合性完全型TGA皆表现为四腔心不对称;④在三血管断面上,TGA胎儿降主动脉比肺动脉更靠前胸壁(7例),在三血管气管断面上,8例TGA胎儿的超声心动图皆显示两条血管而非三条血管(主动脉弓和上腔静脉)。结论心脏基础加强等级心脏扫查各个断面能显示TGA的声像图特点,有助于TGA的产前诊断。
Objective To analyze the sonographic features of transposition of the great arteries （TGA）. Methods Sonographic features of 11 fetuses in the four-chamber view, left and right ventricular outflow tract views, three-vessel （3V） view, three vessels and trachea （3VT） view were retrospectively analyzed. All the cases were confirmed by postnatal echocardiography or autopsy. Results ①All of the 11 cases of TGA （6 of isolated complete TGA, 4 of complicated complete TGA and 1 of corrected TGA） were diagnosed by prenatal echocardiography except one. ②In left or right ventricle outflow tract views, all of the cases presented a parallel distribution of aorta and pulmonary artery, 8 of whom had aorta arising from the morphological right ventricular, and 9 had pulmonary artery arising from the morphological left ventricular. ③In the four-chamber view, symmetrical four-chamber heart was seen in isolated complete TGA and corrected TGA, while asymmetrical four-chamber heart appeared in complicated complete TGA. ④In the 3V view, the ascending aorta was closer to anterior chest than the pulmonary artery in 7 cases. In the 3VT view, the two vessels of aortic arch and superior vena cava rather than three displayed in 8 of TGA fetuses. Conclusion Cardiac scan with extended basic level by fetal echocardiography can be used to exhibit sonographic features of TGA, and contributes to the prenatal diagnosis of TGA.
出处
《中国医学影像技术》
CSCD
北大核心
2009年第4期668-670,共3页
Chinese Journal of Medical Imaging Technology
关键词
大动脉转位胎儿
超声心动描记术
产前
Transposition of the great arteries
Fetus
Echocardiography, prenatal
