Objective To explore the value of 18F-FDG PET/CT on the assessment of chemotherapy response in patients with diffuse large B-cell lymphoma (DLBCL). Methods 18F-FDG PET/CT was performed before and after 4 cycles of chemotherapy( R-CHOP or CHOP protocol) in 53 patients with DLBCL. The patients were divided into 3 groups: complete response group, partial response group and no response group. The therapeutic response was assessed by comparing post-treatment 18F-FDG PET/CT with pre-treatment PET/CT. Complete remission (CR) rate at the end of chemotherapy was calculated. χ2 test was performed with software SPSS 13.0. Results CR rates of complete response group, partially response group and no response group were 88.5% (23/26), 73.3% (11/15) and 8.3% (1/12), respectively (χ2=23.548, P=0.000). CR rates of the complete and partially response groups were significantly higher than those of no response group (χ2=22.656, P=0.000; χ2=11.407, P=0.001). Conclusion 18F-FDG PET/CT may be useful for the assessment of chemotherapy response in DLBCL.%目的 探讨18F-FDG PET/CT评价弥漫性大B细胞淋巴瘤(DLBCL)患者化疗中期治疗反应的价值.方法 DLBCL初诊患者53例,采用环磷酰胺+阿霉素+长春新碱+泼尼松(CHOP)或利妥苷单克隆抗体+环磷酰胺+阿霉素+长春新碱+泼尼松(R-CHOP)方案化疗,分别于化疗前和化疗中期(4个疗程后)进行18F-FDG PET/CT显像.根据肿瘤对化疗的反应将病例分为完全反应组、部分反应组和无反应组,比较3组患者的完全缓解率.用SPSS 13.0软件进行统计学分析,完全缓解率的比较用χ2检验.结果 完全反应组、部分反应组和无反应组的临床完全缓解率分别为88.5%(23/26)、73.3%(11/15)和8.3%(1/12),3组间差异有统计学意义(χ2=23.548,P=0.000).完全反应组、部分反应组的完全缓解率高于无反应组(χ2=22.656,P=0.000和χ2=11.407,P=0.001).结论 DLBCL患者化疗中期18F-FDG PET/CT显像有助于预测其化疗疗效.
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