STUDY ENDPOINTS The primary endpoint will be the extent of MVO, interstitial edema and hemorrhage assessed by CMR in the modified intention-to-treat population. The correlation between CWP, interstitial edema and surrogate parameters of inflammation from peripheral blood samples will be analyzed. Secondary CMR endpoints will include infarct size, myocardial salvage, LV volumes and ejection fraction. LV ejection fraction and volumes will be determined both at discharge and 6 months after the procedure. For enzymatic infarct size determination, high-sensitivity troponin T after 24 and 48 h will be measured. Clinical endpoints of all-cause and cardiovascular death, myocardial re-infarction, target vessel revascularization, stent thrombosis and stroke will be recorded at 6 months.