DCE-MRI对孤立性肺结节良恶性诊断价值的Meta分析

目的 采用Meta分析方法评价动态增强磁共振成像(DCE-MRI)对孤立性肺结节(SPN)良恶性的鉴别诊断价值.方法 计算机检索PubMed、EBSCO、Cochrane Library、Ovid、CBM、VIP、万方和CNKI数据库,检索关于DCE-MRI用来诊断SPN的中英文文献.按照Cochrane协作网推荐的诊断试验纳入标准筛选文献,提取纳入研究文献的特征信息.文献评价采用诊断研究评价工具QUADAS-2.数据采用Stata 12.0和Meta-Disc 1.4软件进行Meta分析,检验异质性和发表偏倚,根据异质性的结果选择相应效应量,计算汇总敏感度、特异度、阳性似然比、阴性似然比以及诊断比值比,绘制汇总受试者工作特征(SROC)曲线并计算曲线下面积(AUC).结果 共纳入17篇文献,包含了1255个病灶,Meta分析结果显示:DCE-MRI对SPN良恶性的诊断价值的汇总灵敏度、特异度、阳性似然比、阴性似然比和诊断比值比分别为0.95、0.81、4.9、0.06、85.SROC曲线AUC为0.97.结论 DCE-MRI对SPN良恶性的鉴别诊断具有较高的灵敏度和特异度,是一种诊断效能较高的影像学检查方法.

Meta-analysis of the value of DCE-MRI in the diagnosis of benign and malignant solitary pulmonary nodules

Objective To evaluate the value of dynamic contrast-enhanced MRI (DCE-MRI)in diagnosing benign and malignant solitary pulmonary nodule (SPN)with Meta-analysis.Methods The databases including PubMed,EBSCO,Cochrane Library,Ovid, CBM,VIP,Wan Fang Database and CNKI were searched to select the literatures about the diagnosis of SPN with DCE-MRI.Inclusion criteria were established,according to the validity criteria for diagnostic research published by the Cochrane Methods Group on Screening and Diagnostic Tests .Methodological quality was assessed by using the quality assessment of diagnostic studies (QUADAS-2)instrument.Meta-analysis was performed by Stata 12.0 and Meta-Disc 1.4.According to the results of heterogeneity of the included articles,proper effect model was selected to calculate the pooled sensitivity,specificity,positive likelihood ration,negative likelihood ration,and diagnostic odds ratio.Summary receiver operating characteristic (SROC)curve was drawed and the area under the curve (AUC)was calculated.Results A total of 17 studies involving 1255 lesions were included.The results of Meta-analysis showed the pooled sensitivity,specificity,positive likelihood ration,negative likelihood ration,and diagnostic odds ratio were 0.95,0.81,4.9,0.06 and 85,respectively.The AUC of SROC was 0.97.Conclusion DCE-MRI has relatively high sensitivity and specificity in the differential diagnosis of benign and malignant SPN.