18F-FDG PET/CT与CT诊断胃癌淋巴结转移价值对比

目的:分析¹⁸F-FDG PET/CT诊断胃癌淋巴结转移的临床诊断价值。方法:选择2018年1月~2019年11月本院收治的40例胃癌患者为研究对象,先实施普通CT检查,随后进行¹⁸F-FDG PET/CT检查,比较两组检查耗时及获得结果等待时间;比较两组对淋巴结转移诊断价值;比较两组发现阳性淋巴结的数量与大小。结果:CT组检查耗时为(15.3±2.1)min,短于¹⁸F-FDG PET/CT的(49.6±6.3),差异有统计学意义(t=32.667,P<0.05),获得结果等待时间为(4.1±0.3)h,短于¹⁸F-FDG PET/CT组的(20.6±2.1),差异有统计学意义(t=49.193,P<0.05),¹⁸F-FDG PET/CT组胃周及远隔脏器淋巴结转移率分别为39例(97.5%)和39例(97.5%)高于CT组的28例(70.0%)和10例(25.0%),差异有统计学意义(χ²=9.185和41.290,P<0.05),¹⁸F-FDG PET/CT组所检测出的阳性淋巴结总量为(5.6±0.2)个,多于CT组的(3.3±0.1)个,差异有统计学意义(t=65.054,P<0.05),大小为(0.9±0.1)cm²则小于CT组的(2.0±0.1)cm²,差异有统计学意义(t=49.193,P<0.05)。结论:针对中晚期胃癌可疑淋巴结转移患者,实施¹⁸F-FDG PET/CT检查,虽然诊断耗时及获得结果时间长,但可更清晰地显露胃周及远隔淋巴结情况,提高诊断阳性率,且利于微小病灶的检出。

Comparison of 18F-FDG PET/CT and CT in Diagnosis of Lymph Node Metastasis of Gastric Cancer

Objective:To evaluate the clinical diagnostic value of ¹⁸F-FDG PET/CT in the diagnosis of lymph node metastasis of gastric cancer.Methods:40 cases with gastric cancer admitted in our hospital from January 2018 to November 2019 were selected as the research objects.Ordinary CT examination was performed first,followed by ¹⁸F-FDG PET/CT examination.The time consumption and waiting time for the results of the two groups were compared.The diagnostic value of the two groups for lymph node metastasis was compared.The number and size of positive lymph nodes were compared between the two groups.Results:The examination time of CT group was(15.3±2.1)min,which was shorter than that of ¹⁸F-FDG PET/CT(49.6±6.3),and the difference was statistically significant(t=32.667,P<0.05);The waiting time for obtaining the results was(4.1±0.3)h,which was shorter than that of the ¹⁸F-FDG PET/CT group(20.6±2.1),and the difference was statistically significant(t=49.193,P<0.05);The lymph node metastasis rates of perigastric and distant organs were higher in 39 cases(97.5%)and 39 cases(97.5%)than those in the CT group in 28 cases(70.0%)and 10 cases(25.0%),and the difference was statistically significant(χ²=9.185,41.290,P<0.05).The total number of positive lymph nodes detected in the ¹⁸F-FDG PET/CT group was(5.6±0.2),which was more than(3.3±0.1)in the CT group,and the difference was statistically significant(t=65.054,P<0.05),the size was(0.9±0.1)cm²,which was smaller than(2.0±0.1)cm² in the CT group,and the difference was statistically significant(t=49.193,P<0.05).Conclusion:¹⁸F-FDG PET/CT examination is performed for patients with lymph node metastasis of advanced gastric cancer.Although the diagnosis takes a long time and results are obtained,it can reveal the perigastric and distant lymph nodes more clearly,so it can improve the positive rate of diagnosis and facilitate the detection of small lesions.