FIGURE 4.  PET-based infarct sizing using manual delineation. Infarct size is defined as the proportion of MCA (MCA_slices) of infarcted myocardium, derived by PET and manual delineation, in relation to histomorphometry. (A) Linear regression analysis. (B) Bland–Altman analysis. Solid line in Bland–Altman plot depicts mean difference; dashed lines depict limits of agreement (mean ± 2 SD).