| 马林,李德军,孙玮,印弘.MRI及DTI对脑部运动区和感觉区的初步评价[J].中国医学影像技术,2003,19(11):1430~1432 |
| MRI及DTI对脑部运动区和感觉区的初步评价 |
| Preliminary Evaluation of Cerebral Motor Areas and Sensory Areas |
| 投稿时间：2003-07-01 |
| DOI： |
| 中文关键词: 脑 磁共振成像 扩散张量成像 |
| 英文关键词:Brain Magnetic resonance imaging Diffusion tensor imaging |
| 基金项目:本课题受国家重点基础研究发展规划项目资助(G1999054006)。 |
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| 中文摘要: |
| 目的 探讨正常成人脑部运动区(内囊后肢皮质脊髓束)和感觉区(丘脑腹后外侧核)的MRI影像表现,评价上述区域的DTI图像特点。方法 对20例正常成人运动区和感觉区的MRI及DTI图像进行观察分析,并对上述区域进行DTI定量测量比较。结果 在T2加权像上,内囊后肢的皮质脊髓束呈略高信号(与皮层信号相等),丘脑腹后外侧核呈等信号。运动区及感觉区左右侧之间DTI定量测量无差异(P>0.05),但运动区测量值大于感觉区测量值(P<0.01)。结论 皮质脊髓束在特定部位呈T2加权像略高信号,DTI可对白质束进行直观显示及定量测量。 |
| 英文摘要: |
| Objective To investigate MR imaging findings in cerebral motor areas (corticospinal tract at the level of posterior limb of the internal capsule) and sensory areas (ventral posterior lateral nucleus of the thalamus) in normal adults,and to assess the DTI features in above-mentioned areas.Methods MRI and DTI of cerebral motor and sensory areas in 20 normal adults were observed and analyzed.The quantitative measurement and comparison were performed based on DTI.Results On T2WI,corticospinal tract demonstrated slight high signal intensity (isointense to gray matter) at the level of posterior limb of the internal capsule,but the ventral posterior lateral nucleus showed isointensity.DTI quantitative data showed no significant differences between bilateral motor areas (P>0.05) or sensory areas (P>0.05),whereas the measurement data of motor areas were significantly higher than that of sensory areas (P<0.01).Conclusion Corticospinal tract presents slight high signal intensity in certain areas on T2WI,and the white matter tracts can be directly demonstrated and quantitatively measured by using DTI. |
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