fig32

Figure 32. Echo-Doppler studies in subcostal long (A, B) and short (C, D) axis projections of the atrial septum, demonstrating Amplatzer Septal Occluder (ASO) device across the atrial septal defect three years after the device implantation; note excellent positioning of the ASO device (A-D) without residual shunt (B, D). Left atrium (LA), right atrium (RA), and superior vena cava (SVC) are labeled.