TABLE 4

Accuracy of 11C-PIB mrDVR and 18F-FDG mrSUVR by ROC Analysis

CutoffSD*SensitivitySpecificityAccuracyAUC† (95% CI)
11C-PIB1.542.01.000.920.95‡0.995 (0.98–1.01)
18F-FDG1.040.80.800.870.830.867 (0.73–0.96)

  • ↵* Number of SD away from the mean of HC.

  • ↵† Significant difference in AUC (P = 0.02).

  • ↵‡ No statistical significance when compared with global visual analysis.

  • CI = confidence interval for AUC.