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Diffusion tensor imaging: Concepts and applications
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DOI：10.1002/jmri.1076.png)
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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 tensor Imaging (DTI), diffusion anisotropy effects can be fully extracted, characterized, and exploited, providing even more exquisite details on tissue microstructure. The most advanced application is certainly that of fiber tracking In the brain, which, in combination with functional NIM, might open a window on the important issue of connectivity. DTI has also been used to demonstrate subtle abnormalities in a variety of diseases (including stroke, multiple sclerosis, dyslexia, and schizophrenia) and is currently becoming part of many routine clinical protocols. The aim of this article Is to review the concepts behind DTI and to present potential applications. (C) 2001 Wiley-Liss, Inc.
Keyword:
CEREBRAL WHITE-MATTER
ANISOTROPICALLY RESTRICTED DIFFUSION
INTRAVOXEL INCOHERENT MOTION
NUCLEAR MAGNETIC-RESONANCE
CORD IN-VIVO
WATER DIFFUSION
WEIGHTED MRI
HUMAN BRAIN
MULTIPLE-SCLEROSIS
ACUTE STROKE
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9.9K
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