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Figure 4 Results of receiver-operating characteristic curve analysis. Peak systolic strain rate (SRs) distinguishes transmural (Trans-MI) from non-transmural (Nontrans-MI) or subendocardial (Subendo-MI) infarction with high sensitivity and specificity. Both SRs and early diastolic strain rate (SRe) can be used to detect an infarction from normal myocardium. AUC = area under the curve; ROC = receiver-operating characteristic.