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Figure 4 Diagnostic accuracy of low-dose dobutamine echocardiography (LDDE), myocardial contrast echocardiography (MCE), and concordant test results. For each measure of diagnostic utility, MCE performed at least as well as LDDE, with the former having a higher sensitivity. Concordant test results occurred in 74% of segments and, when present, further enhanced the overall accuracy. White bars = LDDE; lined bars = MCE; black bars = concordant test results. NPV = negative predictive value; PPV = positive predictive value.
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