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Figure 5 The receiver operating characteristic curves of late gadolinium-enhanced cardiac magnetic resonance imaging with the measurements of percent transmural enhancement (dotted line) and with measurements of thickness of nonenhanced myocardium (solid line) for detecting improved contractile function from scan 1 to 2 in the 110 segments showing impaired contractile function on scan 1 (<22% systolic wall thickening). The area under the receiver operating characteristic curve with the measurements of thickness of nonenhanced myocardium was significantly higher than that with measurements of percent transmural enhancement.