Nonparametric tests of structure for high angular resolution diffusion imaging in Q-space

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Dataset-independent reconstruction of high angular resolution diffusion sampling schemes by generalized q-space imaging

We propose a novel q-space imaging method called generalized q-space imaging (GQI), which is derived from the Fourier transform relationship between the MR signals and underlying diffusion displacement [1]. The method is characterized by being independent of the q-space sampling schemes, enabling us to use either q-ball imaging (QBI) [2] or diffusion spectrum imaging (DSI) dataset [3]. The accu...

متن کامل

Diffusion 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 کامل

k-space and q-space: Combining ultra-high spatial and angular resolution in diffusion imaging using ZOOPPA at 7 T

There is ongoing debate whether using a higher spatial resolution (sampling k-space) or a higher angular resolution (sampling q-space angles) is the better way to improve diffusion MRI (dMRI) based tractography results in living humans. In both cases, the limiting factor is the signal-to-noise ratio (SNR), due to the restricted acquisition time. One possible way to increase the spatial resoluti...

متن کامل

Joint 6D k-q Space Compressed Sensing for Accelerated High Angular Resolution Diffusion MRI

High Angular Resolution Diffusion Imaging (HARDI) avoids the Gaussian. diffusion assumption that is inherent in Diffusion Tensor Imaging (DTI), and is capable of characterizing complex white matter micro-structure with greater precision. However, HARDI methods such as Diffusion Spectrum Imaging (DSI) typically require significantly more signal measurements than DTI, resulting in prohibitively l...

متن کامل

Boosting the Angular Resolution of Q-space Imaging Methods by Diffusion Odf Deconvolution

Introduction Several deconvolution methods have been proposed to increase the angular resolution of HARDI or QBI [1][2]. However, there is no deconvolution method directly applied to diffusion ODF without resorting to spherical decomposition. In this study, we developed a deconvolution method that could be directly applied to diffusion ODF, thus extending its applicability to other q-space meth...

متن کامل

ذخیره 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: The Annals of Applied Statistics

سال: 2011

ISSN: 1932-6157

DOI: 10.1214/10-aoas441