Figure 7: Selected cine frame from aortic arch angiogram in lateral view demonstrating the position of the aortic disc of the Amplatzer duct occluder (ADO) (arrow) in the patent ductus arteriosus (A). Similar cine frame after opening the pulmonary end of the ADO (B). Both illustrate good position of the device components. In B, note small residual shunt thru’ the device and none parallel to it. This would indicate that the size of the device implanted is appropriate to the size of the ductus. Catheter with markers is seen in both A & B. DAo, descending aorta.