Results 151 to 160 of about 12,725 (195)

Diffusion tractography outside the brain: the road less travelled. [PDF]

Brain Struct Funct
Schilling KG, Teh I, Cohen-Adad J, Dortch R, Ibrahim I, Wang N, Damon B, Cochran RL, Leemans A.   +8 more
europepmc   +1 more source

Effects of diffusion MRI spatial resolution on human brain short-range association fiber reconstruction and structural connectivity estimation. [PDF]

Imaging Neurosci (Camb)
Zheng J, Li Z, Zhong W, Wang Z, Li Z, Yang H, Liu M, Cao X, Liao C, Salat DH, Huang SY, Tian Q.   +11 more
europepmc   +1 more source

Structural Fiber Tract Alterations in Relation to Surgery in Children With a Posterior Fossa Tumor. [PDF]

NMR Biomed
Jellema PEJ, Wijnen JP, Kersbergen KJ, Froeling M, Lequin MH, Nieuwenhuis WP, De Luca A, Hoving EW.   +7 more
europepmc   +1 more source

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MRtrix: Diffusion tractography in crossing fiber regions

International Journal of Imaging Systems and Technology, 2012
AbstractIn recent years, diffusion‐weighted magnetic resonance imaging has attracted considerable attention due to its unique potential to delineate the white matter pathways of the brain. However, methodologies currently available and in common use among neuroscientists and clinicians are typically based on the diffusion tensor model, which has ...
Jacques-Donald Tournier, Fernando Calamante, Alan Connelly   +2 more
exaly   +3 more sources

Probabilistic Brain Fiber Tractography on GPUs

2012 IEEE 26th International Parallel and Distributed Processing Symposium Workshops & PhD Forum, 2012
Diffusion Tensor Magnetic Resonance Imaging (DT-MRI) is an emerging technique that explores the structural connectivity of the human brain. The probabilistic fiber tractography based on DT-MRI data behaves more robustly than deterministic approaches in the presence of fiber crossings, but requires more prohibitive computational time.
Mo Xu, Xiaorui Zhang, Yu Wang 0002, Ling Ren 0001, Ziyu Wen, Yi Xu, Gaolang Gong, Ningyi Xu, Huazhong Yang   +8 more
openaire   +1 more source

Uncertainty in White Matter Fiber Tractography

2005
In this work we address the uncertainty associated with fiber paths obtained in white matter fiber tractography. This uncertainty, which arises for example from noise and partial volume effects, is quantified using a Bayesian modeling framework. The theory for estimating the probability of a connection between two areas in the brain is presented, and a
Ola Friman, Carl-Fredrik Westin
openaire   +2 more sources

Tractography of Association Fibers Associated with Language Processing

Clinical Neuroradiology, 2015
Several major association fiber tracts are known to be part of the language processing system. There is evidence that high angular diffusion-based MRI is able to separate these fascicles in a constant way. In this study, we wanted to proof this thesis using a novel whole brain "global tracking" approach and to test for possible lateralization.Global ...
Egger, Karl, Yang, Shan, Reisert, Marco, Kaller, Christoph, Mader, Irina, Beume, Lena-Alexandra, Weiller, Cornelius, Urbach, Horst   +7 more
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Reducing Model Uncertainty in Crossing Fiber Tractography

2021
Diffusion MRI (dMRI) tractography permits the non-invasive reconstruction of major white matter tracts, and is therefore widely used in neurosurgical planning and in neuroscience. However, it is affected by various sources of uncertainty. In this work, we consider the model uncertainty that arises in crossing fiber tractography, from having to select ...
Johannes Gruen, Gemma van der Voort, Thomas Schultz 0001   +2 more
openaire   +1 more source

Fiber tractography assessment in double cortex syndrome

Child's Nervous System, 2011
Subcortical band heterotopia (SBH) or double cortex syndrome is a malformation of cortical development that may be related to intractable epilepsy and severe mental retardation or to mild epilepsy and slight mental delay or normal cognitive functions.
IANNETTI, Paola, NICITA, Francesco, Alberto Spalice, PARISI, Pasquale, PAPETTI, LAURA, Alberto Verrotti   +5 more
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DT-MRI estimation, regularization and fiber tractography

2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano (IEEE Cat No. 04EX821), 2005
Diffusion tensor MRI probes and quantifies the anisotropic diffusion of water molecules in biological tissues, making it possible to non-invasively infer the architecture of the underlying structures. In this article, we present a set of new techniques for the estimation and regularization of diffusion tensors MRI datasets as well as a novel approach ...
Rachid Deriche, David Tschumperlé, Christophe Lenglet   +2 more
openaire   +1 more source