摘要
目的分析有、无冲动行为精神分裂症患者脑白质完整性的不同。方法2009年11月至2011年5月在中山大学附属第三医院精神科住院的41例首发精神分裂症患者根据是否有冲动伤人行为分为有冲动行为组(17例)和无冲动行为组(24例),以脑磁共振弥散张量成像检测脑白质的完整性,以基于体素的分析方法对两组图像进行预处理并进行两样本t检验。结果(1)有冲动行为首发未服药精神分裂症患者组左侧中央前回(MNI:x=-28.00,Y=-28.72,z=-54.71;体素集合数=79)、小脑前叶(MNI:x=-22,Y=-56,z=-28;体素集合数=130)和枕叶(MNI:x=-6,Y=-72,Z=6;体素集合数=54)区白质FA值低于无冲动行为组。(2)未发现有冲动行为组脑白质FA值高于无冲动行为组。结论左侧中央前回、小脑前叶和枕叶脑白质的完整性异常可能与精神分裂症的冲动行为有关。
Objective To compare the regional white matter integrity of schizophrenics with impulsive behaviors versus those without. Methods Seventeen patients with first-episode-schizophrenia impulsive behaviors and 24 patients with first-episode-schizophrenia non-impulsive behaviors underwent diffusion weighted magnetic resonance imaging with a single-shot echo planar imaging (EPI) sequence aligned to straight axial plane. The fractional anisotropy (FA) images of two groups received two-sample t-test with SPM5 software. Results The patients with impulsive behaviors demonstrated a significant decrement of white matter FA values in left precentral gyms ( MN1 : x = - 28.00, y = - 28.72, z = -54.71; cluster = 79 voxels), left cerebellum anterior lobe (MNI: x = - 22, y = - 56, z = - 28; cluster = 130 voxels) and left occipital lobe ( MNI: x = - 6, y : - 72, z = 6; cluster=54 voxels). Conclusion The altered white matter integrity of left precentral gyrus, cerebellum anterior lobe and occipital lobe may be involved in the neural mechanism of impulsive behaviors in schizophrenia.
出处
《中华医学杂志》
CAS
CSCD
北大核心
2011年第43期3030-3033,共4页
National Medical Journal of China
基金
国家自然科学基金青年项目(30900485)
2010年卫生行业科研专项(201002003)
关键词
精神分裂症
冲动行为
脑白质
磁共振弥散张量成像
Schizophrenia
Impulsive behaviors
White matter
Diffusion tensor magnetic resonance imaging