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Fig. 4 | EJNMMI Research

Fig. 4

From: Diagnostic accuracy of coronary opacification derived from coronary computed tomography angiography to detect ischemia: first validation versus single-photon emission computed tomography

Fig. 4

ROC curve of CCO decrease and TAG. While CCO decrease (a) significantly predicted ischemia with an AUC of 0.707 (p < 0.001) in the ROC curve analysis, TAG (b) did not (indicated by an AUC of 0.469; p = 0.616). The arrows in panel a indicate the cutoff value for an abnormal CCO. By adjusting the cutoff value from 0.168 (as defined in the present study) to 0.026, sensitivity would increase to 90% (at the cost of reducing specificity to 29%). On the contrary, a cutoff value at 0.367 would increase specificity to 90% (but decrease sensitivity to 42%)

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