Practice Change With Drug-coated Balloon in Patients With multiVessel Coronary Artery Disease

Inclusion Criteria: 1. Age 19 or older 2. Multivessel coronary artery disease patients requiring coronary intervention * Stenosis of 2 or more major coronary arteries or major coronary artery branches (Vessel size ≥2.5mm) with diameter stenosis ≥50% or fractional flow reserve ≤0.80 requiring repeat revascularization * Having stenotic lesions requiring revascularization with a vessel size of 2.5mm to 3.0mm 3. Capable of understanding the risks and benefits of participating in the study and providing informed consent Exclusion Criteria: 1. Incapable of voluntarily providing informed consent 2. Allergy or contraindication to aspirin, P2Y12 inhibitors, or components of drug-eluting stents 3. Cardiogenic shock or cardiac arrest patients 4. Patients with severe left ventricular systolic dysfunction (ejection fraction \<30%) 5. Patients for whom coronary artery bypass surgery is prioritized over coronary artery intervention 6. Patients with severe valvular heart disease requiring open heart surgery 7. Pregnant or lactating women