Results 41 to 50 of about 149,448 (338)

Linear, planar and spherical tensor-valued diffusion MRI data by free waveform encoding in healthy brain, water, oil and liquid crystals

Data in Brief, 2019
Recently, several biophysical models and signal representations have been proposed for microstructure imaging based on tensor-valued, or multidimensional, diffusion MRI. The acquisition of the necessary data requires non-conventional pulse sequences, and
Filip Szczepankiewicz, Scott Hoge, Carl-Fredrik Westin   +2 more
doaj   +1 more source

Probing tissue microstructure by diffusion skewness tensor imaging

Scientific Reports, 2021
Probing the cellular structure of in vivo biological tissue is a fundamental problem in biomedical imaging and medical science. This work introduces an approach for analyzing diffusion magnetic resonance imaging data acquired by the novel tensor-valued ...
Lipeng Ning, Filip Szczepankiewicz, Markus Nilsson, Yogesh Rathi, Carl-Fredrik Westin   +4 more
doaj   +1 more source

Higher order positive semidefinite diffusion tensor imaging [PDF]

, 2010
Due to the well-known limitations of diffusion tensor imaging, high angular resolution diffusion imaging (HARDI) is used to characterize non-Gaussian diffusion processes. One approach to analyzing HARDI data is to model the apparent diffusion coefficient
Qi, L, Wu, EX, Yu, G
core   +1 more source

The preliminary diffusion tensor imaging study of cerebral microstructure in the acute phase of brain concussion

Исследования и практика в медицине, 2019
Purpose of the study. Concussion does not cause any lesions available for visualization using computed tomography and magnetic resonance imaging. However, it can cause changes at the microstructural level, which can be detected by the diffusion-tensor ...
A. V. Manzhurtsev, O. R. Vasyukova, P. E. Menshchikov, M. V. Ublinskiy, I. A. Melnikov, T. A. Akhadov, N. A. Semenova   +6 more
doaj   +1 more source

Diffusion tensor imaging and beyond [PDF]

Magnetic Resonance in Medicine, 2011
The diffusion of water molecules inside organic tissues is often anisotropic (1). Namely, if there are aligned structures in the tissue, the apparent diffusion coefficient (ADC) of water may vary depending on the orientation along which the diffusion-weighted (DW) measurements are taken.
Tournier, Jacques-Donald, Mori, Susumu, Leemans, Alexander   +2 more
openaire   +3 more sources

Basal Ganglia Compensatory White Matter Changes on DTI in Alzheimer’s Disease

Cells, 2023
The volume reduction of the gray matter structures in patients with Alzheimer’s disease is often accompanied by an asymmetric increase in the number of white matter fibers located close to these structures. The present study aims to investigate the white
Zdeněk Wurst, Barbora Birčák Kuchtová, Jan Křemen, Anastasiya Lahutsina, Ibrahim Ibrahim, Jaroslav Tintěra, Aleš Bartoš, Marek Brabec, Tanya Rai, Petr Zach, Vladimír Musil, Nicoletta Olympiou, Jana Mrzílková   +12 more
doaj   +1 more source

Finsler geometry on higher order tensor fields and applications to high angular resolution diffusion imaging. [PDF]

, 2009
We study 3D-multidirectional images, using Finsler geometry. The application considered here is in medical image analysis, specifically in High Angular Resolution Diffusion Imaging (HARDI) (Tuch et al. in Magn. Reson. Med.
A. Barmpoutis, B. Jian, C. Hamani, C. Lenglet, D. Bao, D. Tuch, D. Tuch, E. Prados, E. Stejskal, E. Özarslan, E. Özarslan, G. Paxinos, J. Melonakos, K. Jansons, L. Astola, L. Astola, L. O’Donnell, M. Cohen de Lara, M. Descoteaux, Z. Shen   +19 more
core   +4 more sources

TractoInferno - A large-scale, open-source, multi-site database for machine learning dMRI tractography

Scientific Data, 2022
Measurement(s) Diffusion Weighted Imaging • Magnetic Resonance Imaging of the Brain without Contrast • Diffusion Tensor Imaging Technology Type(s) 3 T MRI scanner Factor Type(s) Age • Gender Sample Characteristic - Organism Homo ...
Philippe Poulin, Guillaume Theaud, Francois Rheault, Etienne St-Onge, Arnaud Bore, Emmanuelle Renauld, Louis de Beaumont, Samuel Guay, Pierre-Marc Jodoin, Maxime Descoteaux   +9 more
doaj   +1 more source

Diffusion Tensor Imaging in Alzheimer's disease [PDF]

, 2011
Attentional control and Information processing speed are central concepts in cognitive psychology and neuropsychology. Functional neuroimaging and neuropsychological assessment have depicted theoretical models considering attention as a complex and non ...
Alvarez Linera, Juan, Frades, B., Frank, A., Hernández Tamames, J.A., Lubrini, G., Periañez, J.A., Resler, G., Rios Lagos, Marcos, Saenz Lafourcade, C.   +8 more
core   +1 more source

SNUPN‐Related Muscular Dystrophy: Novel Phenotypic, Pathological and Functional Protein Insights

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective SNUPN‐related muscular dystrophy or LGMDR29 is a new entity that covers from a congenital or childhood onset pure muscular dystrophy to more complex phenotypes combining neurodevelopmental features, cataracts, or spinocerebellar ataxia. So far, 12 different variants have been described.
Nuria Muelas, Pablo Iruzubieta, Alberto Damborenea, Laura Pérez‐Fernández, Inmaculada Azorín, Juan Carlos Jiménez García, Ana Töpf, Pilar Martí, Lorena Fores‐Toribio, María Manterola, Rosana Blanco‐Mañez, Oihane Pikatza‐Menoio, Sonia Alonso‐Martín, Volker Straub, Aitziber L. Cortajarena, Adolfo López de Munain, David De Sancho, Lorea Blázquez, Juan J. Vilchez   +18 more
wiley   +1 more source