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作 者:卢青[1] 姚志剑[3] 刘海燕[3] 曹燕翔[3] 王丽[3] 滕皋军[2]
机构地区:[1]东南大学学习科学研究中心,南京210096 [2]东南大学附属中大医院放射科,南京210096 [3]南京医科大学附属脑科医院
出 处:《中华行为医学与脑科学杂志》2009年第2期97-99,共3页Chinese Journal of Behavioral Medicine and Brain Science
基 金:国家“863”高技术研究发展计划(2008AA02Z410);国家自然科学基金项目(30500179);江苏省自然科学基金(青年科技创新人才技术带头人)项目(BK2005427);南京市医学重点科技发展项目(ZKX05003)
摘 要:目的利用弥散张量成像(DTI)及三维结构磁共振成像(30)技术,探讨重性抑郁症首复发患者脑容量及脑白质神经纤维差异状况。方法40例重性抑郁症患者(首发20例,复发20例)及年龄、性别及教育年限相匹配的20例健康对照者,均经DTI及3D扫描,数据处理采用基于像素的全脑分析技术及基于体素的形态学测量方法,全脑范围内探讨脑结构状况。结果复发抑郁症组右额中层、左颞中回及左脑岛区域的白质各向异性值较首发抑郁症组降低(P〈0.005,像素集合〉30);白质容量未发现差异脑区(P〈0.005,像素集合〉30);灰质容量方面,复发抑郁症组的右侧海马体积较首发减小(P〈0.005,像素集合〉30)。结论复发较首发抑郁症患者部分区域白质纤维排列紊乱加重,但尚未涉及自质容量的减少;灰质容量则有部分降低。Objective By diffusion tensor imaging (DTI) and three dimensional structure MRI (3D) , the brain concentration and white matter fiber difference between first-onset and recurrent major depression was explored. Methods 40 patients (first depressive episode 20 cases, recurrent major depression 20 cases) metted with CCMD-3 criteria for major depression disorder and 20 age-,gender-, education-matched healthy controls were scanned DTI and 3D. Voxel-based methods were used to analyze the imaging data in whole brain. Results Compared with the first-onset patients, recurrent patients showed reduced fractional anisotropy (FA) in the right medial frontal gyrus, the left middle temporal gyrus and the left insula (P 〈 0.005, voxels 〉 30). No differences were found in white matter volume (WMV) ,but reduced gray matter volume (GMV) was found in the right hippocampus in recurrent patients (P 〈 0. 005, voxels 〉 30). Conclusion Recurrent major depressive patients exsit more white matter abnormalities than first episode patients, but has not involves WMV changes, GMV showes some atrophy.
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