Araujo Júnior Edward, de Bussamra Luiz Cláudio, Barros Fernanda Silveira Bello, Britto Ingrid Schwach Werneck, Aoki Tsutomo, Pires Claudio Rodrigues, Nowak Paulo Martin, Nardozza Luciano Marcondes Machado, Moron Antonio Fernandes
Department of Obstetrics, São Paulo Federal University (UNIFESP-EPM), São Paulo, SP, Brazil.
Arch Gynecol Obstet. 2008 Oct;278(4):387-91. doi: 10.1007/s00404-008-0597-4. Epub 2008 Feb 20.
Ebstein's anomaly is a rare cardiac defect where the septal and posterior leaflets are displaced, towards the right ventricle. The leaflets are dysplastic and stuck to the ventricular wall. Its antenatal diagnosis is usually made through bidimensional echocardiography, which also has prognostic value. Recently, the technological breakthrough of three-dimensional ultrasound (3D-US) offered new diagnostic tools for congenital heart defects, less dependent on the ultrasonographer experience, when compared to two-dimensional ultrasound (2D-US). The spatio-temporal image correlation (STIC) technique allows the acquisition of the fetal heart volume and its structures as a 4D cineloop sequence showing the complete cardiac cycle. Inversion mode is a new image analysis tool for the examination of fluid-filled fetal structures that inverts the gray scale.
We present a case of Ebstein's anomaly diagnosed at 26 weeks of pregnancy through bidimensional echocardiography. We emphasize its main findings in 3D-US using the STIC and inversion mode techniques.
埃布斯坦畸形是一种罕见的心脏缺陷，其中间隔瓣叶和后瓣叶向右心室移位。瓣叶发育异常并附着于心室壁。其产前诊断通常通过二维超声心动图进行，该检查也具有预后价值。最近，与二维超声（2D-US）相比，三维超声（3D-US）的技术突破为先天性心脏缺陷提供了新的诊断工具，对超声检查者经验的依赖性较小。时空图像相关（STIC）技术可获取胎儿心脏容积及其结构，以4D电影环序列显示完整心动周期。反转模式是一种用于检查充满液体的胎儿结构的新图像分析工具，可反转灰度。
我们报告一例在妊娠26周时通过二维超声心动图诊断为埃布斯坦畸形的病例。我们重点介绍使用STIC和反转模式技术在3D-US中的主要发现。
