منابع مشابه
Hybrid diffusion imaging.
Diffusion measurements in the human central nervous system are complex to characterize and a broad spectrum of methods have been proposed. In this study, a comprehensive diffusion encoding and analysis approach, hybrid diffusion imaging (HYDI), is described. The HYDI encoding scheme is composed of multiple concentric "shells" of constant diffusion weighting, which may be used to characterize th...
متن کاملQuantitative Comparison between Hybrid Diffusion Imaging and Diffusion Spectrum Imaging
Y-C. Wu, A. L. Alexander Medical Physics, University of Wisconsin-Madison, Madison, WI, United States, Psychiatry, University of Wisconsin-Madison, Madison, WI, United States Background At higher levels of diffusion-weighting, the diffusion tensor model is inadequate for describing non-Gaussian diffusion that arises from complex tissue architecture (e.g., crossing white matter (WM) fiber groups...
متن کاملHybrid Diffusion Imaging (HYDI) in a Brain Model of Dysmyelination
Introduction Diffusion tensor imaging (DTI) is widely used for the study of white matter (WM) diseases and fractional anisotropy (FA) is commonly used as a measure of WM integrity. However, FA is also highly sensitive to such factors as non-Gaussian diffusion, crossing fibers and imaging noise, which may degrade its specificity. It has recently been proposed that the axial diffusivity (D//) of ...
متن کاملHybrid Diffusion Imaging in a Spinal Cord Model of Dysmyelination
Introduction: Diffusion tensor imaging (DTI) is widely used for the study of white matter (WM) diseases and fractional anisotropy (FA) is commonly used as a measure of WM integrity. However, FA is also highly sensitive to such factors as non-Gaussian diffusion, crossing fibers and imaging noise, which may impair its specificity. Other DT measures, such as axial diffusivity (Da) and radial diffu...
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Assessment of the integrity of the articular cartilage is considered key for the early diagnosis of osteoarthritis (OA). Diffusion-weighted imaging and diffusion tensor imaging have potential as biomarkers for cartilage composition and structure. The value of diffusion to detect compositional and structural changes in the cartilage matrix has been shown in ex vivo experiments for several years....
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ژورنال
عنوان ژورنال: NeuroImage
سال: 2007
ISSN: 1053-8119
DOI: 10.1016/j.neuroimage.2007.02.050