Late-lumen Changes After Drug-Coated Balloon Angioplasty Versus Drug-Eluting Stents in De Novo Coronary Lesions

This study aims to compare late-lumen loss (LLL) between DCB and DES to treat de novo coronary artery stenosis by intravascular ultrasound (IVUS).

Inclusion Criteria 1. Subject must be at least 19 years of age 2. Subject who is able to understand risks, benefits and treatment alternatives and sign informed consent voluntarily 3. Patients with at least one lesion with greater than 50% diameter stenosis or fractional flow reserve ≤0.80 requiring revascularization in de-novo coronary artery of reference vessel size ≥3.0 mm Exclusion Criteria 1. Patients unable to provide consent 2. Patients with known intolerance to aspirin, P2Y12 inhibitors, or components of drug-eluting stents 3. Patients with angiographic findings of 1) Left main coronary artery disease 2) In-stent restenosis is the cause of target lesion 3) Target lesion in bypass graft 4) True bifurcation lesion that requires upfront 2-stenting 4. Patients who have non-cardiac co-morbid conditions with life expectancy \