Vessel Wall Response of the Bio-Active-stent and Everolimus-Eluting Stent Assessed By Optical Coherence Tomography

Inclusion Criteria: * Patient is ≥ 18 years old; * The patient is presenting with acute coronary syndrome, and according to hospital routine practice, eligible for percutaneous coronary intervention; * Patient or the patient's legal representative has been informed of the nature of the study and has provided written informed consent as approved by the Institutional Ethics Committee of the respective clinical site. Exclusion Criteria: * Lesions in coronary artery bypass grafts * Left main disease * Killip class III-IV * Allergy to aspirin / thienopyridine * Patient in anticoagulation therapy * No suitable anatomy for OCT scan * Ostial lesion * Tortuosity anatomy * Very distal lesion * Vessel size \> 3.75 mm