BioMed Research International / 2015 / Article / Tab 4

Research Article

Large-Vessel Vasculitis: Interobserver Agreement and Diagnostic Accuracy of 18F-FDG-PET/CT

Table 4

Average number of vasculitis PET/CT scores (individual observer scores), Cohen’s kappa, sensitivity, and specificity (95%-CI) according to the different methods applied.

MethodAverage vasculitis score Cohen’s kappaSensitivity*Specificity*

(I) First impression10 (9, 11)0,85100% (61–100%)88% (67–96%)

(IIb) Diffuse uptake,
>liver uptake
6 (5, 7)0,7983% (46–95%)100% (84–100%)

(III) Diffuse uptake,
>femoral artery uptake
7 (7, 7)0,6383% (44–97%)93% (73–98%)

The average sensitivity and specificity of the results of the 2 observers () were calculated.