In brief, infarct size and MVO will be assessed by late enhancement in short-axis images covering the left ventricle approximately 15 min after injection of gadolinium chelate. An inversion-recovery turbo gradient-echo sequence will be used for image acquisition. A hypo-intense core within the hyper-enhanced infarcted area will be defined as MVO. For determination of infarct-related myocardial edema/area at risk, short-axis slices covering the LV using a T2-weighted triple- inversion recovery turbo spin-echo sequence before contrast administration will be obtained. Assessment of LV function and volumes will be performed in short-axis slices from base to apex acquired by a standard steady-state free precession technique.