Figure 7: Selected frames from lateral view of a right ventricular outflow tract cineangiogram (A) demonstrating narrowed outflow tract (arrow). The position of the stent mounted balloon during stent implantation with residual waist (arrow) is shown in B. Following the removal of the balloon, the stent (C) is seen with residual indentation (arrow). Follow-up angiogram (D) shows wide open stent. Right pulmonary artery stent (RPA St) that was implanted at a prior catheterization is seen in each of the frames.