^18F-FDG和^18F—FLT PET／CT诊断肺结节的影响因素研究

目的探讨^18F—FDG（^18F-脱氧葡萄糖）和^18F-FLT（^18F-胸腺嘧啶）双核素PET／CT显像诊断肺结节的影响因素，以提高PET／CT对肺结节的诊断价值。方法选择肺结节患者55例为研究对象，其中男性33例，女性22例，年龄17—82岁，28例为肺内孤立结节，其余为2～3个结节，结节大小0．6～11．0cm，所有患者均行肺部^18F-FDG和^18F—FLTPET／CT检查，分析^18F—FDG和^18F-FLT标准摄取值（SUV）与肺结节患者的性别、年龄、结节大小及病理类型等相互关系和意义。结果55例肺结节患者，^18F—FDG和^18F-FLT标准摄取值与患者的性别、年龄、结节大小等均无关（P〉0．05），^18F-FDG标准摄取值与患者的病理类型无关（P〉0.05），而^18F—FLT标准摄取值与患者的病理类型有关，恶性肿瘤的SUVFLT大于良性肿瘤（P〈0．05）。结论肺结节患者结节的病理类型是影响^18F—FLT标准摄取值的重要因素，^18F—FLTPET／CT鉴别诊断肺结节良恶性具有重要的价值和意义。

The influence factor of 18F-FDG and 18F-FLT PET/CT for diagnosing pulmonary nodules

Objective To evaluate the influence factor of 'SF-FDG and 18F-FLT PET/CT for diagnosing pulmonary nodules.Methods 55 patients with pulmonary nodules were chosen as study target,include 33 male cases and 22 female cases,the age range from 17 to 82 years old.In all cases,28 cases had one pulmonary nodule,others had 2 or 3 pulmonary nodules,and the nodule size was 0.6-11.0 cm.18F-FDG and 18F-FLT PET/CT were performed on 55 patients.The relationship of SUV of 18F-FDG and 18F-FLT with sex,age,size and pathology of all pulmonary nodule patients were analyzed.Results The SUV of 18F-FDG and 18F-FLT had no statistics difference on sex,age and size(P>0.05),the SUV of 18F-FDG had no statistics difference on pathology of pulmonary nodule(P>0.05).Otherwise,the SUV of 18F-FLT had statistics difference on pathology of pulmonary nodule(P<0.05).Conclusion The pathology of pulmonary nodule was an important influence factor for SUV of 18F-FLT,and the ~SF-FLT PET/CT has the high diagnostic effectiveness for pulmonary nodules and this method will has great influence on the clinical management of pulmonary nodule patients.