Figure 5

Figure 5 : 

A. Transthoracic 3D echocardiographic view of a slit-shaped muscular ventricular septal defect in an infant. The ventricular septal defect is viewed from the right ventricular aspect as if the right atrial wall and RV free wall are removed. The RV apex is to the right showing the superoinferiorly directed slit-like ventricular septal defect. The asterisks (*) mark the inferior, diaphragmatic surface of the heart. B. 3D transoesophageal echocardiographic guidance of closure of a muscular ventricular septal defect. The cardiac catheter can be traced accurately across the ventricular septum without the catheter falling out of the plane of the ultrasound beam. C. 3D transoesophageal echocardiographic image of device occlusion of a muscular ventricular septal defect. The left ventricular disc has been deployed but is still attached to the device delivery system, which may be seen crossing the ventricular septum. The depth of field permits a visualization of the device, delivery system and the relationship to the ventricular septal defect. Ant: anterior; Inf: inferior; LA: left atrium; LV: left ventricle; Post: posterior; RA: right atrium; RV: right ventricle; RVOT: right ventricular outflow tract; Sup: superior; TV: tricuspid valve; VSD: ventricular septal defect; >: ventricular septum.