Figure 10: Selected frame from pulmonary vein (PV) cineangiogram demonstrating narrow jet of contrast (arrow) suggestive of severely stenotic PV (A). During implantation of stent, waist of the balloon/stent (St) assembly (arrow) is seen (B); this waist disappeared with further inflation of the balloon (C). Levophase of left pulmonary artery cineangiogram filling of the stent with contrast is seen in D. LA, left atrium.