349 Quantitative classification and radiomics of [18F]FDG-PET/CT 5 Figure 3. ROC curves of quantitative [18F] FDG-PET/CT analysis. ROC curves for SUVmax (blue line), SUVpeak (green), SUVmax-ratio (purple), and SUVpeak-ratio (red) in (a) all (n=123), (b) non-Hürthle cell (n=94), (c) AUS/FLUS (n=55), (d) FN/SFN (n=39) nodules, and (e) Hürthle cell (n=29) nodules. a: In all nodules, the AUCs for the SUVmax, SUVpeak, SUVmaxratio, and SUVpeak-ratio were 0.708 (95% CI, 0.609-0.807), 0.705 (0.601-0.810), 0.729 (0.6330.824), and 0.721 (0.618-0.824), respectively. b: In non-Hürthle cell nodules, these AUCs were 0.732 (95% CI, 0.615-0.849), 0.708 (0.580-0.835), 0.757 (0.650-0.864), and 0.723 (0.601-0.844), respectively. c: In AUS/FLUS nodules, the AUCs for the SUVmax, SUVpeak, SUVmax-ratio, and SUVpeak-ratio were 0.667 (95% CI, 0.490-0.843), 0.642 (0.448-0.837), 0.722 (0.566-0.879), and 0.691 (0.519-0.863), respectively. d: In FN/SFN nodules, these AUCs were 0.803 (95% CI, 0.651-0.955), 0.780 (0.614-0.946), 0.814 (0.672-0.956), and 0.777 (0.607-0.947), respectively. e: In Hürthle cell nodules, these AUCs were 0.533 (95% CI, 0.320-0.747), 0.600 (0.392-0.808), 0.606 (0.388-0.823), and 0.700 (0.502-0.898), respectively. a. b. c. d. e.
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