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Figure 3 Angiographic images before (left) and after (right) percutaneous coronary intervention of the chronic total occlusion of the right coronary artery. The chronic total occlusion angiographic characteristics include tapering, lack of bridging collaterals and side branch at the area of occlusion, proximal location, and no calcification. A total of three drug-eluting stents were implanted in an overlapping fashion from distal to proximal (3.5 x 33, 3.5 x 33, and 3.5 x 23) and a 4.0 non-compliant balloon was used for further expansion of the proximal stent.
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