Results 31 to 40 of about 45,799 (233)

Measures for validation of DTI tractography [PDF]

open access: yesSPIE Proceedings, 2012
The evaluation of analysis methods for diffusion tensor imaging (DTI) remains challenging due to the lack of gold standards and validation frameworks. Significant work remains in developing metrics for comparing fiber bundles generated from streamline tractography.
Sylvain Gouttard   +3 more
openaire   +2 more sources

Magnetic resonance tractography exhibiting retrograde degeneration of the corticospinal tract in a patient with a unilateral spinal cord tumor

open access: yesBrain and Behavior, 2021
Background Transection‐induced axonal retrograde degeneration, in contrast to Wallerian degeneration, has not been widely recognized in clinical practice.
Yusuke Osaki   +3 more
doaj   +1 more source

Diffusion tensor imaging reveals sex differences in pain sensitivity of rats

open access: yesFrontiers in Molecular Neuroscience, 2023
Studies on differences in brain structure and function according to sex are reported to contribute to differences in behavior and cognition. However, few studies have investigated brain structures or used tractography to investigate gender differences in
Myeounghoon Cha   +10 more
doaj   +1 more source

Modelfree global tractography

open access: yesNeuroImage, 2018
Tractography based on diffusion-weighted MRI investigates the large scale arrangement of the neurite fibers in brain white matter. It is usually assumed that the signal is a convolution of a fiber specific response function (FRF) with a fiber orientation distribution (FOD). The FOD is the focus of tractography.
Lidia Konopleva   +6 more
openaire   +4 more sources

Validation of in utero tractography of human fetal commissural and internal capsule fibers with histological structure tensor analysis

open access: yesFrontiers in Neuroanatomy, 2015
Diffusion tensor imaging (DTI) and tractography offer the unique possibility to visualize the developing white matter macroanatomy of the human fetal brain in vivo and in utero and are currently under investigation for their potential use in the ...
Christian eMitter   +11 more
doaj   +1 more source

High b-value diffusion tractography: Abnormal axonal network organization associated with medication-refractory epilepsy

open access: yesNeuroImage, 2022
Diffusion magnetic resonance imaging (dMRI) tractography has played a critical role in characterizing patterns of aberrant brain network reorganization among patients with epilepsy.
Ezequiel Gleichgerrcht   +9 more
doaj   +1 more source

Validate your white matter tractography algorithms with a reappraised ISMRM 2015 Tractography Challenge scoring system

open access: yesScientific Reports, 2023
Since 2015, research groups have sought to produce the ne plus ultra of tractography algorithms using the ISMRM 2015 Tractography Challenge as evaluation. In particular, since 2017, machine learning has made its entrance into the tractography world.
Emmanuelle Renauld   +4 more
doaj   +1 more source

Motor Evoked Potentials Improve Targeting in Deep Brain Stimulation Surgery

open access: yesNeuromodulation: 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   +7 more
wiley   +1 more source

Using mesoscopic tract-tracing data to guide the estimation of fiber orientation distributions in the mouse brain from diffusion MRI

open access: yesNeuroImage, 2023
Diffusion MRI (dMRI) tractography is the only tool for non-invasive mapping of macroscopic structural connectivity over the entire brain. Although it has been successfully used to reconstruct large white matter tracts in the human and animal brains, the ...
Zifei Liang   +3 more
doaj   +1 more source

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

open access: yesNeuromodulation: 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   +9 more
wiley   +1 more source

Home - About - Disclaimer - Privacy