【摘要】 目的 :利用磁共振弥散张量纤维束成像技术 ,研究正常成人大脑胼胝体的形状和结构。方法 :分别对 1 0名正常志愿者 (男 5例 ,女 5例。年龄为 2 4～ 6 5岁 ,平均年龄 4 0 .9岁 )进行弥散张量成像 ,将所得数据输入个人计算机 ,应用日本东京大学附属医院放射科影像计算和分析实验室所研制的软件 :Volume one1 .5 6和diffusionTENSORVisualizer 1 .5 (dTV)进行大脑胼胝体纤维束成像。结果 :本研究成功的在活体显示大脑胼胝体的形状和结构 ,在彩色FA图矢状面上胼胝体呈半月形 ,在弥散张量纤维束图横断面上呈蜈蚣状。结论 :弥散张量纤维束成像可以显示正常人大脑胼胝体 ,为大脑白质纤维束的研究开辟了一新的广阔领域。更多还原

【Abstract】 Objective:To analyse the shape,fiber structure of normal adult cerebral corpus callosum in living humans by using diffusion tensor tracking.Methods:10 healthy adult volunteers (5men,5 women;age range,24～65 years; mean age 40.9years) were examined with MR diffusion tensor.All data were transferred to a personal computer and were processed with dTV(Tokyo University,Japan).Results:The corpus callosums of all volunteers were observed three dimensionally.The corpus callosum showed lune shape on color sagittal fractional anisotropy map and centipede shape on axial diffusion tensor tracking map.Conclusion:Diffusion tensor tracking is useful for showing the normal adult cerebral corpus callosum, and open a new field for researching cerebral white matter fiber in vivo.更多还原