| MR弥散张量成像在中枢神经系统的临床应用 |
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| 引用本文： | 李小明,史瑞华,李勇刚,胡军武,张景峰,徐安辉,张伶.MR弥散张量成像在中枢神经系统的临床应用[J].中国医学影像技术,2004,20(10):1627-1631. |
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| 作者姓名： | 李小明 史瑞华 李勇刚 胡军武 张景峰 徐安辉 张伶 |
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| 作者单位： | 华中科技大学同济医学院附属同济医院放射科,湖北,武汉,430030 |
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| 摘 要： | DWI是一种较新的MR成像技术,图像对比与组织内水分子运动的不同有关,水分子的运动用表观扩散系数表示,DWI对急性脑缺血的早期诊断有重要的临床价值;DTI可用于评估各向同性及各向异性扩散.DTI主要用于评估影响脑白质尤其是白质纤维束完整性的疾病.本文主要对DWI、尤其是DTI在中枢神经系统中的临床应用现状作一综述.
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| 关 键 词： | 弥散加权成像 弥散张量成像 中枢神经系统 |
| 文章编号： | 1003-3289(2004)10-1627-05 |
| 修稿时间： | 2004年4月28日 |
Applications of MR diffusion tensor imaging in clinical neurology |
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| LI Xiao-ming,SHI Rui-hu,LI Yong-gang,HU Jun-wu,ZHANG Jing-feng,XU An-hui and ZHANG Ling.Applications of MR diffusion tensor imaging in clinical neurology[J].Chinese Journal of Medical Imaging Technology,2004,20(10):1627-1631. |
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| Authors: | LI Xiao-ming SHI Rui-hu LI Yong-gang HU Jun-wu ZHANG Jing-feng XU An-hui and ZHANG Ling |
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| Institution: | Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China;Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China;Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China;Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China;Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China;Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China;Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China |
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| Abstract: | Diffusion weighted imaging (DWI) stands for a relatively advanced MRI technique in which image contrast is related to differences in motion of water molecules within the tissue. The apparent diffusion coefficient (ADC) represents the rate of water motion. DWI has been proved to be effective clinically in the early detection of acute cerebral ischemia. Diffusion tensor imaging (DTI) could estimate isotropic and anisotropic diffusion. DTI allows effective evaluation of diseases that interfere the integrity of white matter, especially white matter tracts. In this paper, the current applications of DWI in central nervous system are reviewed, and special attention is paid to applications of DTI. |
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| Keywords: | Diffusion weighted imaging Diffusion tensor imaging Central nervous system |
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