Post mortem PET/MRI images obtained 14 days after a three hour LAD occlusion followed by reperfusion. The late enhanced MR image (left) demonstrates an antero-apical subendocardial infarct. The non-transmural endocardial infarction showed no evidence of microvascular obstruction assessed from the in vivo LGE 3-D data set, consistent with visual inspection of the post mortem LGE images. Enhanced FDG activity is seen within the infarct region (centre-PET image alone right-fused PET/MR). The regression of 111In with 18F was strong (R2 = 0.724) and the slope significantly positive (0.0257 ± 0.0017, p<0.0001).