Figure 3From: Mediastinal staging in non-small-cell lung carcinoma: computed tomography versus F-18-fluorodeoxyglucose positron-emission tomography and computed tomographyThese two parametric ROC curves illustrate the overall mediastinal staging results of CT and FDG PET/CT. In this study the overall diagnostic accuracy of CT and of FDG PET/CT was defined as the area under the parametric ROC curves. The two Roc curves were compared using the chi-square test.Back to article page