Results 31 to 40 of about 16,306 (215)

Kurtosis analysis of neural diffusion organization [PDF]

, 2015
A computational framework is presented for relating the kurtosis tensor for water diffusion in brain to tissue models of brain microstructure. The tissue models are assumed to be comprised of non-exchanging compartments that may be associated with ...
Glenn, GR, Helpern, JA, Hui, ESK, Jensen, JH   +3 more
core   +1 more source

Combined Application of Quantitative Susceptibility Mapping and Diffusion Kurtosis Imaging Techniques to Investigate the Effect of Iron Deposition on Microstructural Changes in the Brain in Parkinson’s Disease

Frontiers in Aging Neuroscience, 2022
ObjectivesBrain iron deposition and microstructural changes in brain tissue are associated with Parkinson’s disease (PD). However, the correlation between these factors in Parkinson’s disease has been little studied.
Lin Yang, Lin Yang, Yan Cheng, Yongyan Sun, Yinghua Xuan, Jianping Niu, Jitian Guan, Yunjie Rong, Yanlong Jia, Zerui Zhuang, Gen Yan, Renhua Wu, Renhua Wu   +12 more
doaj   +1 more source

Extreme diffusion values for non-Gaussian diffusions [PDF]

, 2008
A new magnetic resonance imaging (MRI) model, called diffusion kurtosis imaging (DKI), was recently proposed, to characterize the non-Gaussian diffusion behaviour in tissues.
Han, D, Qi, L, Wu, EX
core   +1 more source

Scanner Invariant Representations for Diffusion MRI Harmonization [PDF]

, 2020
Purpose: In the present work we describe the correction of diffusion-weighted MRI for site and scanner biases using a novel method based on invariant representation. Theory and Methods: Pooled imaging data from multiple sources are subject to variation
Abdi H, Cercignani M, Cover TM, Goodfellow I, Higgins I, Moyer D, Ning L, Tax CM, Zhu AH   +8 more
core   +3 more sources

Investigating the relationship between diffusion kurtosis tensor imaging (DKTI) and histology within the normal human brain

Scientific Reports, 2021
Measurements of water diffusion with MRI have been used as a biomarker of tissue microstructure and heterogeneity. In this study, diffusion kurtosis tensor imaging (DKTI) of the brain was undertaken in 10 healthy volunteers at a clinical field strength ...
Ahmed Maiter, Frank Riemer, Kieren Allinson, Fulvio Zaccagna, Mireia Crispin-Ortuzar, Marcel Gehrung, Mary A. McLean, Andrew N. Priest, James Grist, Tomasz Matys, Martin J. Graves, Ferdia A. Gallagher   +11 more
doaj   +1 more source

Bias in MRI Measurements of Apparent Diffusion Coefficient and Kurtosis: Implications for Choice of Maximum Diffusion Encoding [PDF]

, 2019
Tissue water diffusion is non-Gaussian and the expressions used to calculate diffusion parameters are approximations which introduce systematic errors dependent on the maximum diffusion encoding, diffusion time, etc.
A Chuhutin, C Grinstead, C Liu, DA Yablonskiy, DK Jones, DK Jones, E Fieremans, E Sigmund, EO Stejskal, ES Hui, Glyn Johnson, H Seo, H Shinmoto, H Zhang, HC Thoeny, J Dudink, JH Jensen, JH Jensen, JH Jensen, M Bester, M Iima, N Gilani, N Gilani, N Gilani, N Gilani, N Gilani, Nima Gilani, NM deSouza, PJ Basser, R Fleysher, RA Jones, RJ Theilmann, RV Mulkern, S Goshima, S Lanzafame, V Mohanty, VG Kiselev   +36 more
core   +2 more sources

Spatially selective 2D RF inner field of view (iFOV) diffusion kurtosis imaging (DKI) of the pediatric spinal cord

NeuroImage: Clinical, 2016
Magnetic resonance based diffusion imaging has been gaining more utility and clinical relevance over the past decade. Using conventional echo planar techniques, it is possible to acquire and characterize water diffusion within the central nervous system (
Chris J. Conklin, Devon M. Middleton, Mahdi Alizadeh, Jürgen Finsterbusch, David L. Raunig, Scott H. Faro, Pallav Shah, Laura Krisa, Rebecca Sinko, Joan Z. Delalic, M.J. Mulcahey, Feroze B. Mohamed   +11 more
doaj   +1 more source

Temporal lobe microstructural abnormalities in patients with nasopharyngeal carcinoma quantitatively evaluated by high-resolution DWI and DKI after concurrent chemoradiotherapy

Clinical and Translational Radiation Oncology, 2020
Purpose: To investigate temporal lobe microstructural abnormalities and neurocognitive function impairment after concurrent chemoradiotherapy (CCRT) in patients with nasopharyngeal carcinoma (NPC).
Gang Wu, Rui-rui Li, Priya S. Balasubramanian, Meng-meng Li, Kai Yang, Wei-yuan Huang, Feng Chen   +6 more
doaj   +1 more source

Diffusion Imaging in the Rat Cervical Spinal Cord [PDF]

, 2015
Magnetic resonance imaging (MRI) is the state of the art approach for assessing the status of the spinal cord noninvasively, and can be used as a diagnostic and prognostic tool in cases of disease or injury. Diffusion weighted imaging (DWI), is sensitive
Budde, Matthew D., Kurpad, Shekar N., Schmit, Brian D., Zakszewski, Elizabeth   +3 more
core   +2 more sources

More accurate estimation of diffusion tensor parameters using diffusion kurtosis imaging [PDF]

Magnetic Resonance in Medicine, 2010
AbstractWith diffusion tensor imaging, the diffusion of water molecules through brain structures is quantified by parameters, which are estimated assuming monoexponential diffusion‐weighted signal attenuation. The estimated diffusion parameters, however, depend on the diffusion weighting strength, the b‐value, which hampers the interpretation and ...
Veraart, Jelle, Poot, Dirk, van Hecke, Wim, Blockx, Ines, Van Der Linden, Anne-Marie, Verhoye, Marleen, Sijbers, Jan   +6 more
openaire   +3 more sources