ROC curve for 68Ga-DOTA-TATE PET/CT in subgroups of adrenal tumor (A,B) and extra-adrenal tumor (C,D). (A) In adrenal tumor, the AUC of SUVR was 0.942 (95% CI: 0.87 to 1.000). (B) In adrenal tumor, AUC of score of KS was 0.956 (95% CI: 0.895 to 1.000). (C) In extra-adrenal tumor, AUC of SUVR was 0.906 (95% CI: 0.751 to 1.000). (D) In extra-adrenal tumor, AUC of KS was 0.920 (95% CI: 0.791 to 1.000). ROC, receiver operating characteristic; 68Ga-DOTA-TATE, 68Ga-DOTA(0)-Tyr(3)-octreotate; PET/CT, positron emission tomography/computed tomography; AUC, area under the curve; SUVR, ratio between the SUVmax of the lesion and the SUVmean of the liver; SUVmax, maximal standardized uptake value; SUVmean, mean standardized uptake value; KS, Krenning scale; CI, confidence interval.