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Table 2: Kappa statistical evaluation for interobserver performance of ischemic lesion detection for 3 independent observers
κ Coefficient Percentage Agreement Statistical Significance
C-arm (n = 24) 1.00 100.0% P < .01
PCT (n = 24) 0.74 87.5% P < .01
Note:—n = total number of perfusion maps presented to a single observer.