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Objective To investigate the changes of brain volumes in neuromyelitis optica (NMO)patients using voxel-based morphometry (VBM) method, and preliminarily explore the pattern of cerebral anatomical impairment. Methods Twenty-three clinically defined NMO patients and 15 gender and age matched healthy volunteers underwent 3-dimensional (3D) fast spoiled gradient echo (FSPGR) sequence scanning on 3.0 Tesla MR systen. Raw data was processed and analyzed using statistical parametric mapping (SPM) 5. Whole brain volumes included grey matter volume (GMV), white matter volume (WMV), total intracranial volume (TIV), grey matter fraction (GMF), white matter fraction (WMF),brain tissue fraction (BTF) and regional brain volumes between the two groups were compared by independent samples t-test and an Pearson were performed to compare the regional brain volumes and the ages. Results GMV of NMO group[(610. 2 ± 55.0) ml] was significantly decreased comparing to healthy control group[(657. 2 ± 36. 3) ml] (t = - 2. 915, P < 0. 05). The age of NMO patients [(40 ± 9) years old] showed negative correlation with GMF [(42. 5 ± 2. 6) %] (r = - 0. 673, P < 0. 05). Regional brain volume analysis showed decreased GMV in left insula and bilateral posterior cingutates in NMO patients,while decreased WMV was found in left frontal and left parietal white matter. Conclusion VBM could detect brain volume changes sensitively. Total grey matter volume in NMO patients was decreased comparing to HC group. Regional grey matter atrophy in NMO patients occurred in left insular and bilateral posterior cingutates, regional white matter atrophy occurred in left frontal and left parietal lobe. 相似文献
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MRI是评估颞下颌关节紊乱病的重要工具,尤其是对于关节盘的形态及移位评估具有重要价值。因此,了解颞下颌关节MRI的适应证、禁忌证、扫描方案及成像参数对于颞下颌关节磁共振在临床上的推广应用具有重要意义。 相似文献
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目的探讨交替性霍纳氏综合征(AHS)患者脑部度中心性功能连通性变化。方法对1例AHS患者及8名健康受试者进行脑部结构像及静息态脑功能成像扫描。采用度中心性(DC)方法评价AHS患者脑部静息态默认网络结点的中心性度量变化。统计学采用单样本t检验及双样本t检验,采用假阳性率(FDR)校正,P<0.05有统计学意义。结果 AHS患者左眼发病时DC主要为双侧额中回前部及额盖和岛盖,高于全脑均值的脑区主要为双侧枕叶、颞叶及扣带回,低于正常被试的脑区主要位于左侧颞下回、中央后回,右侧颞上回,枕外侧回及双侧旁中央小叶。右眼发病时DC主要为双侧额上回及额中回前部、顶叶、中扣带回及枕内侧回,高于全脑均值的脑区主要位于双侧枕叶、颞叶及扣带回及双侧额叶眶回、直回,低于正常被试的脑区主要位于左侧缘上回、右侧枕外侧回、旁中央小叶及双侧颞上回。结论 AHS患者脑部改变可表现为多个脑区度中心性功能连接减低。 相似文献
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影像医学有着百年的发展历史,期间共有12位诺贝尔奖得主,3次为物理学奖,3次为生理学或医学奖.从唯物主义的科学哲学思想、科学与技术的完美结合、横断科学方法的渗透及医学精神的折射等方面对其进行哲学思考. 相似文献
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Internet在病理学中的应用 总被引:2,自引:1,他引:1
介绍了Internet信息资源在病理学中的应用及相关的病理学站点,重点介绍了Internet在病理学教学及临床中的应用。 相似文献
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颅内软骨瘤较为罕见,关于其影像报道也较为少见。现报道颅内软骨瘤CT及磁共振影像表现1例,为临床提供诊断经验。 相似文献