Results 101 to 110 of about 49,909 (271)

Clinically Feasible White Matter Fiber Tractography in Peritumoral Zones With Cerebral Vasogenic Edema

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose In diffusion MRI, vasogenic edema manifests as a major fraction of isotropic water that dilutes the anisotropic intra‐axonal portion of the signal. Many tractography algorithms mistake vasogenic edema for the white matter boundary and terminate tracking to prevent producing spurious streamlines.
Patryk Filipiak, Timothy M. Shepherd, Kamri Clarke, Gaia Ressa, Dimitris G. Placantonakis, Fernando E. Boada, Steven H. Baete   +6 more
wiley   +1 more source

MR-tractography method: modern features of visualization and use in neurosurgical practice

Ukrainian Neurosurgical Journal, 2014
Introduction. Modern features of MR-tractography in neuroimaging and at neurosurgical intervention planning at different brain tumors are presented.The purpose. To study MR-tractography facilities for use in neurosurgical practice by assessing
Kristiana Robаk, Olga Chuvashova
doaj   +1 more source

Estimation of Fiber Orientations Using Neighborhood Information

, 2016
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   +1 more source

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

Magnetic Resonance in Medicine, EarlyView.
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, EarlyView.
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

, 2017
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   +1 more source

Regional Brain Volume Differences Were Associated With Behavioural Outcomes in Children Born Preterm: A Systematic Review

Acta Paediatrica, EarlyView.
ABSTRACT Aim This systematic review explored associations between brain structural volumes and behavioural outcomes in children born preterm up to 32 weeks of gestation. Methods PubMed, PsycINFO, Scopus and Web of Science were searched for papers published in English from 1 January 2013 to 7 November 2023.
Yolanda Marín Almagro, Macarena Román Ruiz, Natalia Jiménez Luque, Manuel Lubián Gutiérrez, Simón P. Lubián López, Isabel Benavente Fernández   +5 more
wiley   +1 more source

Affective and cognitive prefrontal cortex projections to the lateral habenula in humans

, 2014
Anterior insula (AI) and dACC are known to process information about pain, loss, adversities, bad, harmful or suboptimal choices and consequences that threaten survival or well-being.
Vadovičová, Karin
core   +1 more source

Real‐Time Rendering of Dynamic Line Sets using Voxel Ray Tracing

Computer Graphics Forum, EarlyView.
Abstract Real‐time rendering of dynamic line sets is relevant in many visualization tasks, including unsteady flow visualization and interactive white matter reconstruction from Magnetic Resonance Imaging. High‐quality global illumination and transparency are important for conveying the spatial structure of dense line sets, yet remain difficult to ...
B. Kraaijeveld, A.C. Jalba, A. Vilanova, M. Chamberland   +3 more
wiley   +1 more source

Elevated neurofilament light levels in acute anorexia nervosa are associated with alterations in white matter volume and connectivity networks

Journal of Child Psychology and Psychiatry, EarlyView.
Background Anorexia nervosa (AN) is a severe eating disorder associated with drastic reductions in gray and white matter (WM) volume and structural connectivity alterations. However, the hypotheses regarding underlying mechanisms are inconclusive. The current study investigated the relationships of WM volume as well as WM network architecture with ...
Inger Hellerhoff, Daniel Geisler, Fabio Bernardoni, Arne Doose, Friederike I. Tam, David M. Poitz, Nina Chotjewitz, Veit Roessner, Katja Akgün, Tjalf Ziemssen, Stefan Ehrlich   +10 more
wiley   +1 more source