Mathematical description of q-space in spherical coordinates: Exact q-ball imaging
نویسندگان
چکیده
منابع مشابه
Q-ball imaging.
Magnetic resonance diffusion tensor imaging (DTI) provides a powerful tool for mapping neural histoarchitecture in vivo. However, DTI can only resolve a single fiber orientation within each imaging voxel due to the constraints of the tensor model. For example, DTI cannot resolve fibers crossing, bending, or twisting within an individual voxel. Intravoxel fiber crossing can be resolved using q-s...
متن کاملMULTIPLE q-SHELL ODF RECONSTRUCTION IN q-BALL IMAGING By
Q-ball imaging (QBI) is a high angular resolution diffusion imaging (HARDI) technique which has been proven very successful in resolving multiple intravoxel fiber orientations in MR images. The standard computation of the orientation distribution function (ODF, the probability of diffusion in a given direction) from q-ball uses linear radial projection, neglecting the change in the volume eleme...
متن کاملMultiple Q-Shell ODF Reconstruction in Q-Ball Imaging
Q-ball imaging (QBI) is a high angular resolution diffusion imaging (HARDI) technique which has been proven very successful in resolving multiple intravoxel fiber orientations in MR images. The standard computation of the orientation distribution function (ODF, the probability of diffusion in a given direction) from q-ball uses linear radial projection, neglecting the change in the volume eleme...
متن کاملq-Space Imaging in Meningioma
It has always been a goal in the medical sciences to develop diagnostic and imaging strategies having a minimum or no invasiveness and/or obliterating need of further invasive investigations. The differentiation of benign versus malignant tumors on the basis of imaging findings has always been a diagnostic dilemma as there is always some degree of overlap of imaging characteristics in both the ...
متن کاملQ-ball imaging with PROPELLER acceleration
Purpose Q-ball imaging [1] has been proven to have ability of resolving intra-voxel fiber crossings. Compared to DSI (Diffusion Spectrum Imaging) [2] it only requires one-half diffusion-weighted images (515-dirs vs 252-dirs), and takes only about 30 minutes to acquire whole brain data. However 30 minutes acquisition time still hinders its clinical applications. Therefore, we propose PROPELLER Q...
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: 2009
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.21917