The coronary angiograms will be assessed at a core laboratory with Quantitative Coronary Angiography. Quantitative angiographic parameters including minimal luminal diameter, binary restenosis rate, total reocclusion rate, late luminal loss, will be evaluated at 8 months. The incidence of clinical events, including death, myocardial infarction, target vessel revascularization, stent thrombosis, will be evaluated at 8, 12 and 24 months.