Results 1 to 10 of about 3,558 (179)

Diffusion MRI sampling schemes bias diffusion metrics and tractography [PDF]

open access: yesFrontiers in Neuroimaging
IntroductionDiffusion MRI is increasingly used to study white-matter architecture, but tractography and diffusion metrics can be biased by different sampling schemes.
Ivanei Bramati   +12 more
doaj   +2 more sources

Multi-view fusion of diffusion MRI microstructural models: a preterm birth study [PDF]

open access: yesFrontiers in Neuroscience
ObjectiveHigh Angular Resolution Diffusion Imaging (HARDI) models have emerged as a valuable tool for investigating microstructure with a higher degree of detail than standard diffusion Magnetic Resonance Imaging (dMRI).
Rosella Trò   +10 more
doaj   +2 more sources

Evidence for direct dopaminergic connections between substantia nigra pars compacta and thalamus in young healthy humans [PDF]

open access: yesFrontiers in Neural Circuits
The substantia nigra pars compacta (SNc), one of the main dopaminergic nuclei of the brain, exerts a regulatory function on the basal ganglia circuitry via the nigro-striatal pathway but its possible dopaminergic innervation of the thalamus has been only
Giovanni Cirillo   +5 more
doaj   +2 more sources

Choice as a stylistic phenomenon of meter and rhyme in the poetry of Ahmad Hardi

open access: yesZanco Journal of Humanity Sciences, 2022
Because the new poets had a high level of culture and lived in the reality of their society, they were aware of all the changes and influences that took place in the world of literature in general and poetry in particular, so they pushed poets in ...
Lanja Kareem Fattah, Nawzad Waqas SAEED
doaj   +1 more source

Optic radiation fiber tractography in glioma patients based on high angular resolution diffusion imaging with compressed sensing compared with diffusion tensor imaging - initial experience. [PDF]

open access: yesPLoS ONE, 2013
OBJECTIVE: Up to now, fiber tractography in the clinical routine is mostly based on diffusion tensor imaging (DTI). However, there are known drawbacks in the resolution of crossing or kissing fibers and in the vicinity of a tumor or edema.
Daniela Kuhnt   +4 more
doaj   +1 more source

Advanced Analysis of Diffusion Tensor Imaging Along With Machine Learning Provides New Sensitive Measures of Tissue Pathology and Intra-Lesion Activity in Multiple Sclerosis

open access: yesFrontiers in Neuroscience, 2021
Tissue pathology in multiple sclerosis (MS) is highly complex, requiring multi-dimensional analysis. In this study, our goal was to test the feasibility of obtaining high angular resolution diffusion imaging (HARDI) metrics through single-shell modeling ...
Olayinka Oladosu   +12 more
doaj   +1 more source

How does B-value affect HARDI reconstruction using clinical diffusion MRI data? [PDF]

open access: yesPLoS ONE, 2015
A number of imaging factors can affect the orientation distribution function (ODF) reconstruction in high angular resolution diffusion imaging (HARDI). The aim of this study was to investigate the effect of the b-value on the HARDI reconstruction and to ...
Sangma Xie   +5 more
doaj   +1 more source

High angular resolution susceptibility imaging and estimation of fiber orientation distribution functions in primate brain

open access: yesNeuroImage, 2023
Uncovering brain-tissue microstructure including axonal characteristics is a major neuroimaging research focus. Within this scope, anisotropic properties of magnetic susceptibility in white matter have been successfully employed to estimate primary ...
Dimitrios G. Gkotsoulias   +14 more
doaj   +1 more source

Converting Multi-shell and Diffusion Spectrum Imaging to High Angular Resolution Diffusion Imaging

open access: yesFrontiers in Neuroscience, 2016
Multi-shell and diffusion spectrum imaging (DSI) are becoming increasingly popular methods of acquiring diffusion MRI data in a research context. However, single-shell acquisitions, such as diffusion tensor imaging (DTI) and high angular resolution ...
Fang-Cheng Yeh, Timothy D Verstynen
doaj   +1 more source

The possibilities of droplet spectrum regulation at application of plant protection products

open access: yesResearch in Agricultural Engineering, 2005
Verification of the possibilities of a droplet spectrum regulation due to the change of working pressure, as well as the change of the size of the discharge orifice of a nozzle, was undertaken in laboratory conditions by measurement of the size of a ...
P. Harašta
doaj   +1 more source

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