目的探析18F-FDG PET/CT显像在 胃癌患者治疗后随访中的应用价值。方法 选择我院2011年4月-2013年4月收治52例 胃癌患者作为研究对象，行PET-CT扫描， 比较18F-FDG PET/CT显像与平扫CT的随访 诊断准确率。结果 52例胃癌患者中共24 例出现复发及转移(20例为远处转移、4 例为原位复发)。18F-FDG PET/CT的复发及 转移诊断准确率达87.5%，明显高于平扫 CT的58.3%，差异的比较有统计学意义(P ＜0.05)。结论 18F-FDG PET-CT显像在胃 癌患者治疗后随访的应用可根据肿瘤组织 代谢情况有效诊断复发与转移情况，作为 进一步治疗的依据，具有显著临床价值。

Objective To analyze the 18F-FDG PET/CT imaging application value in patients with gastric cancer after treatment follow-up. Methods A total of 52 cases of gastric cancer patients from April 2011 to April 2013 were selected as the research object, and compare the follow-up diagnostic accuracy of CT and 18F-FDG PET/CT imaging. Results There were 24 cases of gastric cancer recurrence and metastasis (20 cases of distant metastasis, 4 cases of recurrence in situ). The diagnosis accuracy rate of recurrence and metastasis by 18F-FDG PET/CT was 87.5%, significantly higher than 58.3% of CT, the difference was statistically significant(P<0.05). Conclusion 18F-FDG PET/CT imaging in patients with gastric cancer follow-up can be effectively reflected the recurrence and metastasis and could be the basis for the further treatment, which has significant application value.