磁共振弥散张量成像与静息态功能磁共振成像联合应用对艾滋病患者轻度认知功能下降的初步研究  被引量:3

Human immunodeficiency virus-associated mild cognitive function decline: a preliminary study of the combination of diffusion tensor imaging and resting-state functional magnetic resonance imaging

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作  者:王玲[1] 史大鹏[1] 闫镔[3] 韩雄[2] 王梅云[1] 邱文娟[3] 田捷[4] 

机构地区:[1]河南省人民医院放射科,郑州450003 [2]河南省人民医院神经内科,郑州450003 [3]郑州信息科技学院 [4]中国科学院自动化研究所

出  处:《中华传染病杂志》2013年第1期37-43,共7页Chinese Journal of Infectious Diseases

摘  要:目的应用磁共振弥散张量成像(DTI)与静息态功能磁共振成像(rs-fMRI)及两种图像融合技术探讨AIDS患者轻度认知功能下降白质损害与皮层功能区损害的分布及相互关系。方法对26例经蒙特利尔认知评估量表(MoCA量表)评估的AIDS轻度认知功能下降患者(AIDS组)和30名健康志愿者(健康对照组),行全脑DTI和rs—fMRI检查,获得全脑各向异性分数值(FA值)降低脑区分布图和以后扣带回为种子点静息态默认模式网络脑功能连接图,并采用图像融合技术将两组图像进行融合。结果AIDS组脑白质FA值降低脑区为左楔前叶(t=4.0499,P〈0.005)和右侧的楔前叶(t=5.1553,P%0.005)、额上回(t=5.1517、5.1484,均P〈0.005)、额中回(t=4.1444,P〈0.005)、中央前回(t=3.7395,P〈0.005)、枕叶(t=7.2236,P〈0.005)、顶下小叶(t=4.1450,P〈0.005);静息态与后扣带回功能连接相关脑区为左侧的扣带回(t=32.78,P〈0.005)、楔前叶(t=4.51,P〈0.005)、额上回(t=14.33、4.53,均P〈0.005)、颞中回(t=10.01、5.72,P〈0.005)、颞下回(t=5.99,P〈0.005)、海马旁回(t=7.63,P〈0.005)和右侧的后扣带回(t=34.81,P〈0.005)、楔前叶(t=32.09,P〈0.005)、额上回(t=14.12,P〈0.005)、额中回(t=17.71,P〈0.005)、颞上回(t=14.59,P〈0.005)和颞中回(t=11.83,P〈0.005);与后扣带回功能连接减弱相关脑区为左侧的楔前叶(t=5.39,P〈0.01)、前扣带回(t=3.66,P〈0.01)、小脑扁桃体(t=7.51,P〈0.01)和右侧的顶上小叶(t=4.44,P%0.01)、海马旁回(t=3.69,P〈0.01)和小脑扁桃体(t=6.15,P〈0.01)。图像融合分析显示,AIDS组左侧楔前叶脑白质FA值降低脑区其皮层功能活动显著减弱;左楔前叶、右侧的楔前叶、额上�Objective The purpose of this study was to use diffusion tensor imaging (DTI) and resting-state functional magnetic resonance imaging (rs-fMRI) alone or in combination to observe the distribution of white matter lesions and cortical malfunctional areas in human immunodeficiency virus (HIV) infected patients with mild cognitive decline and to explore the relationship between the DTI and the rs-fMRI methods. Methods Twenty-six HIV infected patients with mild cognitive impairment and 30 healthy volunteers were selected by Montreal Cognitive Asessment (MoCA) scale evaluation. DTI data and rs-fMRI data were obtained, fractional anisotropy (FA) value images were obtained with voxel based analysis and the resting state default mode network (DMN), functional connectivity images were obtained with cingulate gyrus as a seed point. Overlay images were obtained with FA, DMN and Ch2 standard images. Results Compared with the control group, the white matter FA values were significantly decreased in the left precuneus (t= 4. 0499, P〈0. 005) and right precuneus (t=5. 1553, P〈0. 005), right superior frontal gyrus (t=5. 1517, 5. 1484, P〈0. 005), right middle frontal gyrus (t=4. 1444, P〈0. 005), right precentral gyrus (t=3. 7395, P〈0. 005), right occipital lobe (t=7. 2236, P〈0. 005), and right inferior parietal lobule (t=4. 1450, P〈0. 005) in acquired immunodeficiency syndrome (AIDS) patients. In resting-state default mode network, areas significantly related to cingulate gyrus seed point included the left cingulate gyrus (t = 32. 78, P〈 0.005), left precuneus (t=4. 51, P〈0. 005), left superior frontal gyrus (t= 14. 33,4. 53, P〈 0. 005), left middle temporal gyrus (t= 10.01, 5.72, P〈0. 005), left inferior temporal gyrus (t 5.99, P〈0. 005), left parahippocampal gyrus (t=7.63, P〈0. 005), right posterior cingulate (t= 34.81, P〈0. 005), right precuneus (t=32.09, P〈0. 005), right superior frontal gyrus(t=14.12, P〈0.0

关 键 词:获得性免疫缺陷综合征 认知障碍  磁共振成像 弥散 各向异性 脑白质病 进行性多病灶 大脑皮质 

分 类 号:R445.2[医药卫生—影像医学与核医学]

 

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