Clinical applications of diffusion tensor imaging
نویسندگان
چکیده
منابع مشابه
Invited Review Clinical Applications of Diffusion Tensor Imaging
Directionally-ordered cellular structures that impede water motion, such as cell membranes and myelin, result in water mobility that is also directionally-dependent. Diffusion tensor imaging characterizes this directional nature of water motion and thereby provides structural information that cannot be obtained by standard anatomic imaging. Quantitative apparent diffusion coefficients and fract...
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Decreases in FA may be due to lower axial diffusivity that results from alterations in axonal structure or to the increased radial diffusivity that results from differences in myelin, or to some combination of both [3-5]. FA is therefore a nonspecific indicator of changes in white matter composition. In particular, in voxels containing more than one fiber, the FA calculation is inherently inacc...
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With the advances in diffusion magnetic resonance (MR) imaging techniques, diffusion tensor imaging (DTI) has been applied to a number of neurological conditions because DTI can demonstrate microstructures of the brain that are not assessable with conventional MR imaging. Tractography based on DTI offers gross visualization of the white matter fiber architecture in the human brain in vivo. Degr...
متن کاملDiffusion tensor imaging: concepts and applications.
The success of diffusion magnetic resonance imaging (MRI) is deeply rooted in the powerful concept that during their random, diffusion-driven displacements molecules probe tissue structure at a microscopic scale well beyond the usual image resolution. As diffusion is truly a three-dimensional process, molecular mobility in tissues may be anisotropic, as in brain white matter. With diffusion ten...
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Diffusion-weighted imaging (DWI) is an integral part of routine neuroimaging, used nearly universally in brain MRIs, and more recently for the spine, spinal cord, and head and neck. DWI provides clinically relevant information on conditions including stroke, infection, and neoplasms. Diffusion tensor imaging (DTI) is a powerful, newer technique with the potential for multiple protocols, includi...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2003
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.10424