扩散张量成像对正常儿童脑白质结构的初步探讨--彩色张量图的应用

目的　分析正常儿童的脑彩色张量图表现 ,探讨扩散张量成像对评价儿童脑发育的价值。方法　对 89名正常儿童 (年龄 2d～ 18岁 )行头部扩散张量成像 ,分析不同年龄段、不同白质纤维束的显示情况并总结规律。结果　不同年龄段正常儿童的彩色扩散图表现不同 ,随年龄增长 ,可显示的白质纤维束增多 ,边界逐渐清晰 ,5岁以后表现接近于成人。结论　彩色张量图适用于直观评价儿童脑白质的发育情况 ,优于常规磁共振成像

Primary Study of the White Matter in Normal Children with Color Tensor Map

Objective To study findings of the white matter of nomal children on color tensor map and evaluate the diffusion tensor imaging in the assessing development of the brain. Methods DTI was obtained in 89 normal children aging from 2 days to 18 years.Their color tensor maps were generated and analyzed.Results Their color tensor maps revealed different findings due to aging;with the increase of the age,the fiber tracts showed were more and well defined.Conclusion The color tensor map is superior to the routine MR in assessing the development of the white matter.