王东东;姜春晖;王俭;

• 1:新疆医科大学第一附属医院影像中心核磁室

摘要(Abstract)：

目的用Meta分析法评价磁共振扩散张量成像对轻度认知障碍(mild cognitive impairment,MCI)的诊断价值。材料与方法使用计算机检索数据库Pubmed、CNKI、万方、维普等,收集有关磁共振扩散张量成像对MCI研究的文献,检索时限均为自建库至2015年1月31日。从文献中提取轻度认知障碍组与正常对照组(NC)所使用的定量指标各向异性(fractional anisotrophy,FA)值对不同脑区(额叶、顶叶、颞叶、枕叶、后扣带束、海马、海马旁回、内囊后肢、上、下纵束、穹窿、胼胝体膝部及压部、钩束)的测量数据,用Meta分析软件(Review manager 5.3)对最终符合标准的文献进行汇总分析,获得汇总加权均数差(weighted mean difference,WMD)及95%可信区间(95%CI)。结果共纳入47篇文献(30篇英文、17篇中文),MCI组的FA值低于NC组,汇总WMD及95%CI为–0.05[–0.05,0.04],上述脑区除枕叶外差异均具有统计学意义。结论 MCI患者存在脑白质微细结构的损害,弥散张量成像(diffusion tensor imaging,DTI)技术能够提供MCI的早期诊断指标。

关键词(KeyWords)： 轻度认知障碍;扩散张量成像;Meta分析;帕金森病

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王东东;姜春晖;王俭;

Email:

参考文献(References)：

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