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Bivariate boxplot of the sensitivities and specificities in the included studies. (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. SENS, sensitivity; SPEC, specificity.
