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血管性认知功能损害患者工作记忆和计算能力的fMRI研究 被引量:8

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摘要 目的研究血管性认知功能损害(vascular cognitive impairment,VCI)患者在执行工作记忆和计算任务时,其功能磁共振(functional magnetic resonance imaging,fMRI)的信号激活脑区强度同正常人进行比较是否存在区别,明确VCI患者脑功能区信号变化特点,为VCI提供影像学诊断依据。方法采用简明精神状态检查(mini-mental state examination,MMSE)进行智能评定。利用功能磁共振成像技术,对25例VCI患者和15例对照组患者进行倒背数字作业,计算能力测验,对脑激活功能区进行分析,利用SPM2软件对图像数据进行处理。结果 VCI患者倒背数字作业时,双侧额中回、海马及颞上回激活脑区像素值显著减少(P<0.05);在计算能力测试方面,双侧额中回、海马、颞上回以及左侧角回、缘上回激活脑区像素值也显著减少(P<0.05)。结论在执行工作记忆和计算任务时,VCI患者存在特定激活脑区信号的减弱,通过对fMRI信号的侦测,可以为VCI的早期诊断提供影像学依据。
出处 《中国神经精神疾病杂志》 CAS CSCD 北大核心 2011年第1期49-51,共3页 Chinese Journal of Nervous and Mental Diseases
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参考文献10

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