Results 71 to 80 of about 372,517 (152)

TDF-TRACT: Probabilistic tractography using the tensor distribution function [PDF]

2011 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2011
Fractional anisotropy (FA), a widely used measure of fiber integrity based on diffusion tensor imaging (DTI), is theoretically confounded by several other quantities including the degree of fiber orientation incoherence within each voxel, and partial volume effects from neighboring gray matter or CSF.
Johnson J. GadElkarim, Liang Zhan, Shaolin Yang, Aifeng Zhang, Lori L. Altshuler, Melissa Lamar, Olusola Ajilore, Paul M. Thompson, Anand R. Kumar, Alex D. Leow   +9 more
openaire   +2 more sources

Optic Radiation Tractography in Pediatric Brain Surgery Applications: A Reliability and Agreement Assessment of the Tractography Method

Frontiers in Neuroscience, 2019
BackgroundOptic radiation (OR) tractography may help predict and reduce post-neurosurgical visual field deficits. OR tractography methods currently lack pediatric and surgical focus.PurposeWe propose a clinically feasible OR tractography strategy in a ...
Joseph Yuan-Mou Yang, Joseph Yuan-Mou Yang, Joseph Yuan-Mou Yang, Joseph Yuan-Mou Yang, Richard Beare, Richard Beare, Michelle Hao Wu, Sarah M. Barton, Sarah M. Barton, Sarah M. Barton, Sarah M. Barton, Charles B. Malpas, Charles B. Malpas, Charles B. Malpas, Chun-Hung Yeh, A. Simon Harvey, A. Simon Harvey, A. Simon Harvey, Vicki Anderson, Vicki Anderson, Vicki Anderson, Vicki Anderson, Wirginia J. Maixner, Wirginia J. Maixner, Marc Seal, Marc Seal   +25 more
doaj   +1 more source

Reproducibility of the Structural Brain Connectome Derived from Diffusion Tensor Imaging. [PDF]

PLoS ONE, 2015
Disruptions of brain anatomical connectivity are believed to play a central role in several neurological and psychiatric illnesses. The structural brain connectome is typically derived from diffusion tensor imaging (DTI), which may be influenced by ...
Leonardo Bonilha, Ezequiel Gleichgerrcht, Julius Fridriksson, Chris Rorden, Jesse L Breedlove, Travis Nesland, Walter Paulus, Gunther Helms, Niels K Focke   +8 more
doaj   +1 more source

Cortical Cholinergic Pathway Degeneration Reflects Cognitive Impairment and Dementia in Parkinson's Disease

Movement Disorders, EarlyView.
Abstract Background Cognitive impairment is a prevalent and debilitating feature of Parkinson's disease (PD). Increasing evidence from postmortem and in vivo positron emission tomography imaging studies supports cholinergic dysfunction in PD. There is, however, little evidence regarding the influence of the structural integrity of cortical cholinergic ...
Nicola M. Slater, Daniel J. Myall, Reza Shoorangiz, Wassilios G. Meissner, Ian J. Kirk, Ross J. Keenan, Rebecca M. Lee, Kyla‐Louise Horne, Michael R. MacAskill, Campbell J. Le Heron, Toni L. Pitcher, Tim J. Anderson, Tracy R. Melzer, John C. Dalrymple‐Alford   +13 more
wiley   +1 more source

Methods of diffusion MRI tractography for localization of the anterior optic pathway: A systematic review of validated methods

NeuroImage: Clinical, 2023
The anterior optic pathway (AOP) is a system of three structures (optic nerves, optic chiasma, and optic tracts) that convey visual stimuli from the retina to the lateral geniculate nuclei.
Alessandro Carrozzi, Laura Ludovica Gramegna, Giovanni Sighinolfi, Matteo Zoli, Diego Mazzatenta, Claudia Testa, Raffaele Lodi, Caterina Tonon, David Neil Manners   +8 more
doaj   +1 more source

Analysis of Muscle Fibre Orientation in the Human Medial and Lateral Pterygoid Muscles Using Diffusion Tensor Imaging: A Methodological Study

Journal of Oral Rehabilitation, EarlyView.
This study used diffusion tensor imaging (DTI) tractography to assess in vivo 3D muscle fibre orientation of the medial and lateral pterygoid muscles in ten healthy men. Scans were performed at simulated mandibular rest and 25‐mm open‐mouth positions. DTI tractography successfully visualised the internal fibre architecture. During mouth opening, marked
Shiori Kinomura, Takehiko Sugano, Yasuko Tatewaki, Kentaro Oba, Kenta Shobara, Toru Ogawa, Yasuyuki Taki, Kuniyasu Niizuma, Ryuta Kawashima, Keiichi Sasaki, Nobuhiro Yoda   +10 more
wiley   +1 more source

Probabilistic tractography of the optic radiations—An automated method and anatomical validation

NeuroImage, 2010
Accurately tracing the optic radiations in living humans has important implications for studying the relationship between tract structure or integrity and visual function, in health and disease. Probabilistic tractography is an established method for tracing white matter tracts in humans.
Philip L. Clatworthy, Guy B. Williams, Julio Acosta-Cabronero, Peter S. Jones, S. G. Harding, Heidi Johansen-Berg, Jean-Claude Baron   +6 more
openaire   +3 more sources

Fiberweb: Diffusion Visualization and Processing in the Browser

Frontiers in Neuroinformatics, 2017
Data visualization is one of the most important tool to explore the brain as we know it. In this work, we introduce a novel browser-based solution for medical imaging data visualization and interaction with diffusion-weighted magnetic resonance imaging ...
Louis-Philippe Ledoux, Felix C. Morency, Martin Cousineau, Martin Cousineau, Jean-Christophe Houde, Jean-Christophe Houde, Kevin Whittingstall, Kevin Whittingstall, Kevin Whittingstall, Maxime Descoteaux, Maxime Descoteaux, Maxime Descoteaux   +11 more
doaj   +1 more source

Prenatal Diagnosis of Recurrent Fetal Intracranial Hemorrhage and a Maternally Inherited COL4A1 Variant of Uncertain Significance: A Case Report With Maternal Reverse Phenotyping

Clinical Case Reports, Volume 14, Issue 11, November 2026.
ABSTRACT A 33‐year‐old woman with two consecutive pregnancies affected by fetal left periventricular germinal matrix hemorrhage (Grade IV) and progressive ventriculomegaly underwent trio whole‐exome sequencing. A heterozygous COL4A1 c.4249G>C (p.Gly1417Arg) variant, classified as a variant of uncertain significance, was identified in the fetus of the ...
Wei Shi, Hongjing Xu, Caihong Pu, Yuanzhong Liang, Ting Zhao, Xueli Wang, Zhenxing Liu, Chunhua Zhang, Ting Li, Fengquan He   +9 more
wiley   +1 more source

A Web-Based Probabilistic Tractography Database [PDF]

, 2009
Diffusion tensor imaging (DTI) and probabilistic tractography allow inferences to be made about connectivity in the brain. Tractography results are useful to a range of communities, from those working in MR, through biologists, psychologists and ...
Logothetis, N., Haroon, H., Embleton, K., Parker, G., Rose, C., Morris, E., Lambon Ralph, M., Ellard, D.   +7 more
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