(a) Chronic total occlusion of the right coronary artery with vital and ischemic myocardium of the posterior wall (scintigraphy, data not shown). b) Retrograde filling of the right coronary artery via injection into the left coronary artery; note simultaneous placement of the catheter in the right coronary and left coronary artery respectively in (a) and (b). (c) PCI wire in the distal right coronary artery. (d) Verification of intraluminal seating of the PCI wire in the right posterior descending artery with retrograde filling via the catheter in the left coronary artery. (e) Extensive dissection of the right coronary artery after balloon angioplasty. (f) Complete and stable revascularization after stent implantation.