Side Branch Predilatation Strategy in Coronary Bifurcation Lesion Stenting (SBPS)

1. Inclusion Criteria * Subject at least 18 years of age. * Subject able to verbally confirm understandings of risks, benefits of receiving PCI for true bifurcation lesions, and he/she or his/her legally authorized representative provides written informed consent prior to any study related procedure. * Target main branch lesion(s) located in a native coronary artery with diameter of ≥ 2.5 mm and ≤ 4.5 mm. Target side branch lesion(s) located in a native coronary artery with diameter of ≥ 2.0 mm. * Target lesion(s) amenable for PCI with balloon angioplasty of the side branch. 2. Exclusion Criteria * ST-segment elevation myocardial infarction (STEMI) * Non-cardiac co-morbid conditions are present with life expectancy \<1 year or that may result in protocol non-compliance (per site investigator's medical judgment). * Subjects who refuse to give informed consent. * Subjects with left ventricle ejection fraction \<30% * Subjects with moderate or severe degree valvular heart disease or primary cardiomyopathy * Contraindications for 12 months double antiplatelet therapy