Measurement of fiber orientation distributions using high angular resolution diffusion imaging
نویسندگان
چکیده
منابع مشابه
Estimation of fiber Orientation Probability Density Functions in High Angular Resolution Diffusion Imaging
An estimator of the Orientation Probability Density Function (OPDF) of fiber tracts in the white matter of the brain from High Angular Resolution Diffusion data is presented. Unlike Q-Balls, which use the Funk-Radon transform to estimate the radial projection of the 3D Probability Density Function, the Jacobian of the spherical coordinates is included in the Funk-Radon approximation to the radi...
متن کاملDetermination of Fiber Direction in High Angular Resolution Diffusion Images using Spherical Harmonics Functions and Wiener Filter
Diffusion tensor imaging (DTI) MRI is a noninvasive imaging method of the cerebral tissues whose fibers directions are not evaluated correctly in the regions of the crossing fibers. For the same reason the high angular resolution diffusion images (HARDI) are used for estimation of the fiber direction in each voxel. One of the main methods to specify the direction of fibers is usage of the spher...
متن کاملFiber tracking of the Arcuate Fasciculus in Autism using High Angular Resolution Diffusion Imaging
H. Eavani, L. Bloy, J. Herrington, T. L. Roberts, R. T. Schultz, and R. Verma Center for Autism Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States, Section of Biomedical Image Analysis, Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, United States, Department of Bioengineering, University of Pennsylvania, Lurie Family Founda...
متن کاملReliably Estimating the Diffusion Orientation Distribution Function from High Angular Resolution Diffusion Imaging Data
This paper describes an automated model selection method for analysing the relationship between the order of the spherical harmonic basis functions used to fit high angular resolution diffusion imaging (HARDI) data and the accuracy of the fitting results. The method performs statistical inference on the spherical harmonic expansion coefficients and uses a backward elimination procedure to remov...
متن کاملDiffusion Simulation Tractography for High Angular Resolution Diffusion Imaging
Introduction While the standard diffusion tensor imaging (DTI) approach has proven to be a valuable tool in detecting local tissue structure and reconstructing neural fiber networks in brain, it cannot accurately reveal the white matter structure in the presence of multiple fiber orientations within a single voxel. In particular, for crossed fibers, the second-order diffusion tensor model fails...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2005
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.20667