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Figure 1 The receiver operating characteristics curve for the distinction between dysfunctional myocardium with and without functional recovery at follow-up. Tracer uptake had better test characteristics (solid line; area under curve [AUC] ± SE, 0.82 ± 0.04) than normalized unipolar voltage amplitude (UVA) (dashed line; AUC ± SE, 0.70 ± 0.05, p < 0.05 vs. tracer uptake) and absolute UVA (dotted line; AUC ± SE, 0.63 ± 0.05, p < 0.05 vs. tracer uptake). Normalization of UVA tended to improved the diagnostic accuracy of electromechanical mapping (p = 0.09 vs. UVA).