Figure 4. Areas under the ROC curves of readers with nonfocused enhanced CT. The area under the ROC curve for reader 1 (
) was 0.954 ± 0.024, that for reader 2 (
) was 0.985 ± 0.017, and that for reader 3 (
) was 0.954 ± 0.024. FPF = false-positive fraction, TPF = true-positive fraction.