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弥散张量成像在周围神经病变的应用及进展
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- Author:
- No author available
- Journal Title:
- Chinese Journal of Biomedical Engineering
- Issue:
- 5
- DOI:
- 10.3760/cma.j.issn.1674-1927.2012.05.021
- Key Word:
- No keyword available
Abstract： 弥散张量成像(diffusion tensor imaging,DTI)及纤维束示踪术(diffusion tensor tracking,DTT)是在常规弥散基础上发展起来的新兴技术,可通过监测水分子的随机运动和测量各向异性来提供组织的显微结构和组织架构等有价值的信息,具有常规MRI技术无法比拟的优势.目前已广泛应用于中枢神经系统多种疾病的诊断及预后评价中.近年来,DTI及DTT示踪技术已逐步应用于周围神经及肌肉病变的诊断.由于神经纤维的组织学特性,沿着神经轴突长轴方向弥散略高于垂直于它们的短轴方向,导致各向异性扩散存在差异,因此,周围神经病变适合采用DTI及DTT技术对细微结构进行评估及量化研究.
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