SR-HARDI: Spatially Regularizing High Angular Resolution Diffusion Imaging
نویسندگان
چکیده
منابع مشابه
Genetic Analysis of High Angular Resolution Diffusion Images (HARDI)
Imaging genetics is a new field that extends methods from quantitative genetics to handle brain images. Its goal is to identify features of the brain that are genetically influenced, and then find specific variations at the genomic level that contribute to them. Recent studies using diffusion tensor imaging (DTI) in twins have discovered specific genomic variations that influence standard DTI-d...
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We developed an analysis pipeline enabling population studies of HARDI data, and applied it to map genetic influences on fiber architecture in 90 twin subjects. We applied tensor-driven 3D fluid registration to HARDI, resampling the spherical fiber orientation distribution functions (ODFs) in appropriate Riemannian manifolds, after ODF regularization and sharpening. Fitting structural equation ...
متن کاملHigh Angular Resolution Diffusion Imaging (HARDI) with Highly Constrained Back Projection Reconstruction (HYPR)
Y-C. Wu, C. A. Mistretta, A. L. Alexander, T. Andrews, P. J. Whalen, and J. V. Haxby Dartmouth Brain Imaging Center, Dartmouth College, Hanover, NH, United States, Wisconsin Institutes for Medical Research, University of Wisconsin-Madison, Madison, WI, United States, Medical Physics, University of Wisconsin-Madison, Madison, WI, United States, College of Medicine, University of Vermont, Burling...
متن کاملA Study of Information Gain in High Angular Resolution Diffusion Imaging (HARDI)
Diffusion weighted magnetic resonance (MR) imaging is a powerful tool to investigate white matter microstructure, by mapping local 3D displacement profiles of water molecules in brain tissue. Highangular resolution diffusion imaging (HARDI) schemes have been employed to resolve fiber crossing and more complex diffusion geometries. Most recently, the tensor distribution function (TDF) has been p...
متن کاملHow Many Gradients are Sufficient in High-Angular Resolution Diffusion Imaging (HARDI)?
Introduction: High-angular resolution diffusion imaging (HARDI) is a powerful extension of MRI that maps the directional diffusion of water in the brain, based on applying diffusion-sensitized gradients in 30-100 or more different directions. In the Diffusion Tensor (DT) model, a tensor is fitted to the set of diffusion images, and maps of fiber integrity such as fractional or relative anisotro...
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ژورنال
عنوان ژورنال: Journal of Computational and Graphical Statistics
سال: 2016
ISSN: 1061-8600,1537-2715
DOI: 10.1080/10618600.2015.1105750