Intra-patient Study With Polymer Free Drug Eluting Stent Versus Abluminal Biodegradable Polymer Drug Eluting Stent With Early OCT (Optical Coherence Tomography) Follow up

Inclusion Criteria: * Aged ≥ 18 years * Signature of informed consent * Patients with angina and a clinical indication for coronary revascularisation with a drug-eluting stent * Presence of at least 2 lesions to be revascularised with similar angiographic characteristics * Reference lesion diameter with at most a difference of 0.5 mm * Maximum difference in lesion length of 10 mm * Lesions able to be treated with only 1 stent Exclusion Criteria: * Lesions due to restenosis * Lesions in saphenous vein grafts * STE-ACS ( ST elevation- Acute Coronary Syndrome) * Cardiogenic shock * Dual antiplatelet therapy contraindication for\> 3 months * Follow-up catheterisation contraindicated * Chronic kidney failure with creatinine \> 2 mg/dL * Allergy to iodinated contrast agents * Serious complication from vascular access in previous catheterisation * Ineligible for evaluation via optical coherence tomography * Lesion located \<5 mm from aorto-ostial junction * Severe proximal angulation \>90º * Bifurcation lesion requiring a strategy with two stents * Angiographic characteristics that promote stent malposition * Aneurysm or coronary artery ectasia * Presence of a thrombus classed as TIMI (Thrombolysis In Myocardial Infarction )2 flow or higher * Severe calcification, in particular in cases of calcium spike * Severe lesion angulation * Inability to do reliable follow-up, in the investigator's opinion