Results 121 to 130 of about 45,799 (233)

Evaluation of corpus callosum lesions following intracranial tumors by using magnetic resonance tractography and diffusion tensor imaging

Ukrainian Neurosurgical Journal, 2015
Introduction. The results of the evaluation of data MR tractography and DTI in patients with brain tumors that spread to the area of the corpus callosum (CC) were presented.Materials and methods.
Kristiana Robak
doaj   +1 more source

Evaluating 35 Methods to Generate Structural Connectomes Using Pairwise Classification

There is no consensus on how to construct structural brain networks from diffusion MRI. How variations in pre-processing steps affect network reliability and its ability to distinguish subjects remains opaque.
A Daducci, BB Avants, BC Wijk Van, C Destrieux, D Greve, DS Bassett, E Garyfallidis, I Aganj, JD Tournier, M Rubinov, P Hagmann, Patric Hagmann, PE Shrout, RS Desikan   +13 more
core   +2 more sources

Conus Medullaris Teratoma with Utilization of Fiber Tractography: Case Report

Journal of Neurological Surgery Reports, 2015
Objective Conus medullaris teratomas are very rare tumors. Traditional preoperative diagnosis depended on the findings from magnetic resonance imaging (MRI).
Fahad Alkherayf, Abdullah Faisal Arab, Eve Tsai   +2 more
doaj   +1 more source

The Emerging Role of Tractography in Deep Brain Stimulation: Basic Principles and Current Applications

Brain Sciences, 2018
Diffusion tensor imaging (DTI) is an MRI-based technique that delineates white matter tracts in the brain by tracking the diffusion of water in neural tissue.
Nelson B. Rodrigues, Karim Mithani, Ying Meng, Nir Lipsman, Clement Hamani   +4 more
doaj   +1 more source

Hippocampal subfields and limbic white matter jointly predict learning rate in older adults

First published online: 04 December 2019Age-related memory impairments have been linked to differences in structural brain parameters, including cerebral white matter (WM) microstructure and hippocampal (HC) volume, but their combined influences are ...
Bender, A., Brandmaier, A., Düzel, S., Keresztes, A., Kühn, S., Lindenberger, U., Pasternak, O.   +6 more
core   +1 more source

Network‐level disconnectivity tracks poststroke depressive symptom improvement

Psychiatry and Clinical Neurosciences, EarlyView.
Aims Poststroke depression is the most common psychological condition following a stroke and can severely impact outcome. However, the neurobiological biomarkers associated with recovery of poststroke depression remain unclear. In this longitudinal observational study, we set out to investigate the effect of lesion‐induced focal damage and network ...
Aleksi J. Sihvonen, Sonia L. E. Brownsett, David A. Copland, Alistair Walsh, Stephen M. Davis, Geoffrey A. Donnan, Leeanne M. Carey   +6 more
wiley   +1 more source

Estimation of Fiber Orientations Using Neighborhood Information

Data from diffusion magnetic resonance imaging (dMRI) can be used to reconstruct fiber tracts, for example, in muscle and white matter. Estimation of fiber orientations (FOs) is a crucial step in the reconstruction process and these estimates can be ...
A. Daducci, A. Ramirez-Manzanares, B. Bilgic, B. Jian, B.A. Landman, Chuyang Ye, D. Bihan Le, F.C. Yeh, J. Tournier, M. Descoteaux, O. Michailovich, O. Pasternak, S. Becker, S.J. Kim, S.L. Merlet, T.E.J. Behrens, V. Arsigny, X. Hao   +17 more
core   +2 more sources

A Numerical Alternative to MR Thermometry for Safety Validation of Multi‐Channel RF Transmit Coils

Magnetic Resonance in Medicine, Volume 96, Issue 1, Page 469-484, July 2026.
ABSTRACT Purpose This study proposes a numerical technique to estimate peak local specific absorption rate (SAR) uncertainty of multi‐channel RF coils during the process of safety validation as an alternative to experimental temperature and electric‐field measurements, and demonstrates its use to enable human studies at 10.5 T.
Alireza Sadeghi‐Tarakameh, Simon Schmidt, Matt Waks, Russell L. Lagore, Andrea Grant, Edward Auerbach, Lance DelaBarre, Lasse Knudsen, Christophe Lenglet, Luca Vizioli, Essa Yacoub, Gregor Adriany, Gregory J. Metzger, Kamil Ugurbil, Yigitcan Eryaman   +14 more
wiley   +1 more source

Offline Reconstruction of Diffusion MRI Acquisitions for Comparison Between Complex PCA‐Based and AI‐Based Denoising

Magnetic Resonance in Medicine, Volume 96, Issue 1, Page 435-447, July 2026.
ABSTRACT Purpose Optimal diffusion MRI (dMRI) data for image denoising is often unavailable from scanner reconstruction. In this work, we make available an offline reconstruction pipeline for GE dMRI acquisitions, giving access to complex dMRI data. Furthermore, we compare the efficacy of GE HealthCare's AIR‐Recon DL (ARDL), a proprietary convolutional
Francesco D'Antonio, Shaun Warrington, Jose‐Pedro Manzano‐Patron, Paul S. Morgan, Stamatios N. Sotiropoulos   +4 more
wiley   +1 more source

Fiber-Flux Diffusion Density for White Matter Tracts Analysis: Application to Mild Anomalies Localization in Contact Sports Players

We present the concept of fiber-flux density for locally quantifying white matter (WM) fiber bundles. By combining scalar diffusivity measures (e.g., fractional anisotropy) with fiber-flux measurements, we define new local descriptors called Fiber-Flux ...
C Stamile, E Garyfallidis, E Garyfallidis, FC Yeh, J Mårtensson, J Sethian, JB Colby, JD Yeatman, L Heimer, L O’Donnell, L Younes, LJ O’Donnell, LJ O’Donnell, M Khatami, MB Hulkower, ME Shenton, MK Chung, N Charon, P Basser, PA Yushkevich, S Durrleman, S Mori, SM Smith, TB Sebastian, Y Benjamini   +24 more
core   +2 more sources