磁共振弥散张量分析及其在中枢神经系统的临床应用  

Magnetic resonance diffusion tensor analysis and its application to central nervous system

作　　者：李海云[1] 王筝[1] 

机构地区：[1]首都医科大学生物医学工程学院,北京市100054

出　　处：《医疗卫生装备》2004年第8期14-15,共2页Chinese Medical Equipment Journal

基　　金：北京市优秀人才培养基金资助。

摘　　要：磁共振弥散张量成像是一种非侵入的描述活体组织中水分子运动的方向依赖性特征的医学影像技术,提供张量矩阵分析用于检测组织的微观结构特征,本文研究了磁共振弥散张量的原理及计算方法,并对其在中枢神经系统的临床应用进行了探讨。Magnetic resonance diffusion tensor imaging (DTI) has been established as the primary imaging modality for non-invasive characterization of the direction-dependent motion of water molecules in the living tissue. DTI provides each image voxel with a 3x3 tensor matrix that can be processed to probe tissue microstructure and microarchitecture. In this paper, the imaging principle and diffusion tensor calculation are introduced. Examples are given to describe image-processing techniques for DTI visualization, fiber tracking, and applications to central nervous system.

关 键 词：磁共振 弥散张量成像 各向异性 

分 类 号：R445.2[医药卫生—影像医学与核医学]