Exclusion: Patients with prior myocardial infarction, more than one significant occlusion, prehospital thrombolysis, known history of renal failure, history of autoimmune diseases, pregnancy, fertile women or breastfeeding, severe concurrent illness with reduced short-term prognosis, pacemaker, claustrophobia, cardiogenic shock, metals in the body, atrial fibrillation, BMI ≥ 40.