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SROC curves. (A) FDG PET for lymph node metastasis; (B) FDG PET for distant metastasis; (C) FDG PET for recurrent gastric cancer; (D) CECT for lymph node metastasis; (E) CECT for distant metastasis; and (F) CECT for recurrent gastric cancer. CECT, contrast-enhanced computed tomography; FDG PET, fluorodeoxyglucose positron emission tomography; SROC, summary receiver operating characteristic; SENS, sensitivity; SPEC, specificity; AUC, area under the curve.
