Routine Versus As-Needed Stress Testing in Asymptomatic Patients With High-Risk Coronary Calcium

Inclusion Criteria: * Subject must be at least 19 years of age. ② Asymptomatic patients with high-risk coronary calcium (Agatston Score ≥ 400) Exclusion Criteria: * Documentation of objective evidence of inducible ischemia before enrollment * Presence of significant coronary artery stenosis (≥ 70% diameter stenosis) confirmed by coronary angiography or coronary computed tomography angiography before enrollment * History of coronary revascularization procedure ④ Pregnancy or breast feeding ⑤ 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) ⑥ Unwillingness or inability to comply with the procedures described in this protocol.