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非高斯扩散MR成像在轻度认知障碍和阿尔茨海默病中的应用价值 被引量:7

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摘要 目的应用非高斯扩散MR成像——扩散峰度成像(DKI)技术研究轻度认知障碍(MCI)病人和阿尔茨海默病(AD)病人脑组织微观结构的差异,为早期临床诊断提供影像学依据。方法选取AD病人20例(AD组),MCI病人20例(MCI组)及正常老年人20例(NC组),使其性别、年龄及受教育程度相匹配,对其行MRI常规扫描及DKI扫描,分析所得DKI参数:MK值、MD值及FA值间的差异性。结果海马灰质的MK值在三组间两两比较的差异有统计学意义,MD值在NC与AD组间及MCI与AD组间的差异具有统计学意义;颞、顶叶、后扣带回白质、胼胝体压部的MK、MD、FA在NC与AD组间差异有统计学意义;后扣带回白质的MK值、FA值在NC与MCI组间差异具有统计学意义;后扣带回白质的MK值、MD值、FA值在MCI与AD组间差异均具有统计学意义。结论 DKI技术可以早期发现MCI及AD病人脑微观结构的变化,为早期临床诊断提供重要影像学依据。
出处 《中西医结合心脑血管病杂志》 2016年第3期304-308,共5页 Chinese Journal of Integrative Medicine on Cardio-Cerebrovascular Disease
基金 山西省科技厅基础研究项目(No.2012011043-2) 山西省科技厅基础研究项目(No.2015011092) 山西省科技攻关项目(No.20130313020-5)
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