Results 31 to 40 of about 711,932 (170)

Longitudinal Scalar-on-Function Regression with Application to Tractography Data [PDF]

, 2012
We propose a class of estimation techniques for scalar-on-function regression in longitudinal studies where both outcomes, such as test results on motor functions, and functional predictors, such as brain images, may be observed at multiple visits.
Gertheiss, Jan, Greven, Sonja, Goldsmith, Jeff, Crainiceanu, Ciprian   +3 more
core   +1 more source

Deterministic diffusion fiber tracking improved by quantitative anisotropy. [PDF]

PLoS ONE, 2013
Diffusion MRI tractography has emerged as a useful and popular tool for mapping connections between brain regions. In this study, we examined the performance of quantitative anisotropy (QA) in facilitating deterministic fiber tracking.
Fang-Cheng Yeh, Timothy D Verstynen, Yibao Wang, Juan C Fernández-Miranda, Wen-Yih Isaac Tseng   +4 more
doaj   +1 more source

Structural network efficiency is associated with cognitive impairment in small-vessel disease. [PDF]

, 2014
To characterize brain network connectivity impairment in cerebral small-vessel disease (SVD) and its relationship with MRI disease markers and cognitive impairment.METHODS: A cross-sectional design applied graph-based efficiency analysis to deterministic
Lawrence, AJ, A. W. Chung, T. R. Barrick, Chung, AW, Barrick, Thomas R., Lawrence, Andrew J.; id_orcid, A. J. Lawrence, H. S. Markus, Morris, RG, Morris, Robin G., Barrick, TR, Chung, Ai Wern, R. G. Morris, Markus, Hugh S., Markus, HS   +14 more
core   +1 more source

Combining tractography and cortical measures to test system-specific hypotheses in multiple sclerosis. [PDF]

, 2010
The objective was to test three motor system-specific hypotheses in multiple sclerosis patients: (i) corticospinal tract and primary motor cortex imaging measures differ between multiple sclerosis patients and controls; (ii) in patients, these measures ...
Ciccarelli, Olga, Thompson, Alan J, Gorgoraptis, Nikos, Wheeler-Kingshott, Claudia AM, Altmann, Daniel R, Jenkins, Thomas M, Miller, David H   +6 more
core   +1 more source

Diffusion tensor tractography of brainstem fibers and its application in pain.

PLoS ONE, 2020
Evaluation of brainstem pathways with diffusion tensor imaging (DTI) and tractography may provide insights into pathophysiologies associated with dysfunction of key brainstem circuits.
Yu Zhang, Andrei A Vakhtin, Jennifer S Jennings, Payam Massaband, Max Wintermark, Patricia L Craig, J Wesson Ashford, J David Clark, Ansgar J Furst   +8 more
doaj   +1 more source

Alterations in fiber pathways reveal brain tumor typology: a diffusion tractography study [PDF]

PeerJ, 2014
Conventional structural Magnetic Resonance (MR) techniques can accurately identify brain tumors but do not provide exhaustive information about the integrity of the surrounding/embedded white matter (WM).
Martina Campanella, Tamara Ius, Miran Skrap, Luciano Fadiga   +3 more
doaj   +2 more sources

Spherical-deconvolution informed filtering of tractograms changes laterality of structural connectome

NeuroImage
Diffusion MRI-driven tractography, a non-invasive technique that reveals how the brain is connected, is widely used in brain lateralization studies.
Yifei He, Yoonmi Hong, Ye Wu
doaj   +1 more source

Diffusion tensor imaging: Influence of segmentation on fiber tracking in the supraspinatus muscle-An inter-operator reliability analysis.

PLoS ONE, 2023
The ability of muscle to generate force depends on its architecture and health condition. MR-based diffusion tensor imaging of muscle (mDTI) is an innovative approach for showing the fiber arrangement for the whole muscle volume.
Sebastian Vetter, Hans-Peter Köhler, Pierre Hepp, Hanno Steinke, Stefan Schleifenbaum, Jan Theopold, Simon Kiem, Maren Witt, Jeanette Henkelmann, Christian Roth   +9 more
doaj   +1 more source

DDSurfer: A Weakly‐Supervised Dual‐Stream Deep Learning Framework for Cortical Surface Reconstruction From Diffusion MRI

Advanced Science, EarlyView.
DDSurfer reconstructs cortical surfaces directly from diffusion MRI without requiring T1‐weighted scans. By fusing complementary microstructural features and learning diffeomorphic deformations, it efficiently generates accurate white matter and pial surfaces, improving geometric fidelity and morphometric reliability across datasets for robust surface ...
Chengjin Li, Wei Zhang, Xi Zhu, Yuqian Chen, Nir A. Sochen, Jarrett Rushmore, Carl‐Fredrik Westin, Yogesh Rathi, Lauren J. O'Donnell, Ofer Pasternak, Fan Zhang   +10 more
wiley   +1 more source

Scoping literature review: Comparing MRI tractography methods for optic radiation analysis

The Anatomical Record, EarlyView.
Abstract Accurate tractography mapping of the optic radiations is essential to avoiding post‐operative visual field deficits in patients undergoing temporal lobe surgery. This literature review highlights the current landscape of MRI tractography methods that are used to delineate the optic radiations (ORs), with a particular focus on the anterior ...
Hriday Sahni, Cristina Schaurich, Lara Boyd, Claudia Krebs   +3 more
wiley   +1 more source