Results 21 to 30 of about 12,775 (195)

Spatially regularized low-rank tensor approximation for accurate and fast tractography

NeuroImage, 2023
Tractography based on diffusion Magnetic Resonance Imaging (dMRI) is the prevalent approach to the in vivo delineation of white matter tracts in the human brain.
Johannes Gruen, Samuel Groeschel, Thomas Schultz   +2 more
doaj   +1 more source

Physical and digital phantoms for validating tractography and assessing artifacts

NeuroImage, 2021
Fiber tractography is widely used to non-invasively map white-matter bundles in vivo using diffusion-weighted magnetic resonance imaging (dMRI). As it is the case for all scientific methods, proper validation is a key prerequisite for the successful ...
Ivana Drobnjak, Peter Neher, Cyril Poupon, Tabinda Sarwar   +3 more
doaj   +1 more source

Diffusion MRI fiber tractography of the brain [PDF]

NMR in Biomedicine, 2017
The ability of fiber tractography to delineate non‐invasively the white matter fiber pathways of the brain raises possibilities for clinical applications and offers enormous potential for neuroscience. In the last decade, fiber tracking has become the method of choice to investigate quantitative MRI parameters in specific bundles of white matter.
Ben Jeurissen, Maxime Descoteaux, Susumu Mori, Alexander Leemans   +3 more
openaire   +3 more sources

Seeing More by Showing Less: Orientation-Dependent Transparency Rendering for Fiber Tractography Visualization. [PDF]

PLoS ONE, 2015
Fiber tractography plays an important role in exploring the architectural organization of fiber trajectories, both in fundamental neuroscience and in clinical applications.
Chantal M W Tax, Maxime Chamberland, Marijn van Stralen, Max A Viergever, Kevin Whittingstall, David Fortin, Maxime Descoteaux, Alexander Leemans   +7 more
doaj   +1 more source

Motor Evoked Potentials Improve Targeting in Deep Brain Stimulation Surgery

Neuromodulation: Technology at the Neural Interface, EarlyView., 2021
Abstract Objectives One of the main challenges posed by the surgical deep brain stimulation (DBS) procedure is the successful targeting of the structures of interest and avoidance of side effects, especially in asleep surgery. Here, intraoperative motor evoked potentials (MEPs) might serve as tool to identify the pyramidal tract.
Petyo Nikolov, Verena Heil, Christian J. Hartmann, Nikola Ivanov, Philipp J. Slotty, Jan Vesper, Alfons Schnitzler, Stefan Jun Groiss   +7 more
wiley   +1 more source

Improving Fiber Alignment in HARDI by Combining Contextual PDE Flow with Constrained Spherical Deconvolution. [PDF]

PLoS ONE, 2015
We propose two strategies to improve the quality of tractography results computed from diffusion weighted magnetic resonance imaging (DW-MRI) data.
J M Portegies, R H J Fick, G R Sanguinetti, S P L Meesters, G Girard, R Duits   +5 more
doaj   +1 more source

FIESTA: Autoencoders for accurate fiber segmentation in tractography

NeuroImage, 2023
White matter bundle segmentation is a cornerstone of modern tractography to study the brain's structural connectivity in domains such as neurological disorders, neurosurgery, and aging. In this study, we present FIESTA (FIbEr Segmentation in Tractography using Autoencoders), a reliable and robust, fully automated, and easily semi-automatically ...
Félix Dumais, Jon Haitz Legarreta, Carl Lemaire, Philippe Poulin, François Rheault, Laurent Petit, Muhamed Barakovic, Stefano Magon, Maxime Descoteaux, Pierre-Marc Jodoin   +9 more
openaire   +4 more sources

Deep Brain Stimulation Reduces Conflict‐Related Theta and Error‐Related Negativity in Patients With Obsessive–Compulsive Disorder

Neuromodulation: Technology at the Neural Interface, EarlyView., 2021
Abstract Objectives Obsessive–compulsive disorder (OCD) is a psychiatric disorder with alterations of cortico‐striato‐thalamo‐cortical loops and impaired performance monitoring. Electrophysiological markers such as conflict‐related medial frontal theta (MFT) and error‐related negativity (ERN) may be altered by clinically effective deep brain ...
Elena Sildatke, Theo O. J. Gruendler, Markus Ullsperger, Till A. Dembek, Juan Carlos Baldermann, Sina Kohl, Veerle Visser‐Vandewalle, Daniel Huys, Jens Kuhn, Thomas Schüller   +9 more
wiley   +1 more source

Reconstruction of white matter tracts via repeated deterministic streamline tracking--initial experience. [PDF]

PLoS ONE, 2013
Diffusion Tensor Imaging (DTI) and fiber tractography are established methods to reconstruct major white matter tracts in the human brain in-vivo. Particularly in the context of neurosurgical procedures, reliable information about the course of fiber ...
Miriam H A Bauer, Daniela Kuhnt, Sebastiano Barbieri, Jan Klein, Andreas Becker, Bernd Freisleben, Horst K Hahn, Christopher Nimsky   +7 more
doaj   +1 more source

Fuzzy Fibers: Uncertainty in dMRI Tractography [PDF]

, 2014
Fiber tracking based on diffusion weighted Magnetic Resonance Imaging (dMRI) allows for noninvasive reconstruction of fiber bundles in the human brain. In this chapter, we discuss sources of error and uncertainty in this technique, and review strategies that afford a more reliable interpretation of the results.
Schultz, Thomas, Vilanova, Anna, Brecheisen, Ralph, Kindlmann, Gordon   +3 more
openaire   +3 more sources