【摘要】 目的应用弥散张量成像(DTI)技术探究成年早期起病精神分裂症患者脑白质结构变化,为精神分裂症患者病理学研究提供结构性神经影像学依据。方法选取2012年7月至2014年3月在新乡医学院第二附属医院住院的26例成年早期起病的精神分裂症患者为研究组,同期招募28例性别、年龄、利手情况及受教育程度与研究组相匹配的健康受试者为对照组,2组受试者均进行头颅结构像和DTI扫描。采用基于体素分析的方法比较2组受试者相同脑区白质各向异性(FA)及平均弥散率(MD)。结果与对照组比较,研究组患者右侧扣带回前部、胼胝体膝部、右侧内囊前肢、双侧外囊、双侧放射冠后部及右侧放射冠前部等脑区FA降低(P<0.05);研究组患者双侧内囊后肢、右侧放射冠上部、左侧上纵束、胼胝体及右侧扣带束等脑区MD显著高于对照组(P<0.05)。结论成年早期起病精神分裂症患者存在多个脑区白质微结构损伤,这些改变可能与精神分裂症的病理改变相关。更多还原

【Abstract】 Objective To explore the structure changes of white matter of the patients with schizophrenia episode in early adulthood by diffusion tensor imaging( DTI) and in order to provide a structural neuroimaging basis for understanding the pathology of schizophrenia. Methods Twenty-six patients with schizophrenia episode in early adulthood in the Second Affiliated Hospital of Xinxiang Medical University from July 2012 to March 2014 were selected as study group and twenty-eight healthy subjects whose age,sex,education were matched with study group were selected as control group. All subjects received structural magnetic resonance imaging and DTI scans. The fractional anisotropy( FA) and the mean diffusivity( MD) of the white matter of the same encephalic region were compared between the two groups by voxel-based analyses. Results The FA values of the right anterior cingulate gyrusthe,genu of corpus callosum,the right limb of internal capsule,the bilateral external capsule,the bilateral posterior of coronal radiate,the right anterior coronal radiate of patients in the study group were significantly lower than those in the control group( P < 0. 05). The MD values of the bilateral limbs of internal capsule,the right cingulate gyrus,left superior longitudinal tract,corpus callosum and right anterior coronal radiate of patients in the study group were significantly higher than those in the control group( P < 0. 05). Conclusion Schizophrenia patients who episode in early adulthood exist widespread microstructural damage of white matter. These changes may be related to the pathological change of schizophrenia.更多还原