Results 41 to 50 of about 860,607 (233)

Sparse solution of fiber orientation distribution function by diffusion decomposition. [PDF]

PLoS ONE, 2013
Fiber orientation is the key information in diffusion tractography. Several deconvolution methods have been proposed to obtain fiber orientations by estimating a fiber orientation distribution function (ODF).
Fang-Cheng Yeh, Wen-Yih Isaac Tseng
doaj   +1 more source

Deep Learning Estimation of Multi-Tissue Constrained Spherical Deconvolution with Limited Single Shell DW-MRI. [PDF]

Proc SPIE Int Soc Opt Eng, 2020
Diffusion-weighted magnetic resonance imaging (DW-MRI) is the only non-invasive approach for estimation of intra-voxel tissue microarchitecture and reconstruction of in vivo neural pathways for the human brain. With improvement in accelerated MRI acquisition technologies, DW-MRI protocols that make use of multiple levels of diffusion sensitization have
Nath V, Pathak SK, Schilling KG, Schneider W, Landman BA.   +4 more
europepmc   +7 more sources

Spherical deconvolution with tissue-specific response functions and multi-shell diffusion MRI to estimate multiple fiber orientation distributions (mFODs)

NeuroImage, 2020
In diffusion MRI, spherical deconvolution approaches can estimate local white matter (WM) fiber orientation distributions (FOD) which can be used to produce fiber tractography reconstructions.
Alberto De Luca, Fenghua Guo, Martijn Froeling, Alexander Leemans   +3 more
doaj   +1 more source

Improving tractography in peri-lesional oedema using constrained spherical deconvolution in paediatric neurosurgery patients. [PDF]

Brain Struct Funct
Tractography guides neurosurgical planning by balancing lesion resection with functional preservation. A common challenge to this approach is that some lesions have accompanying oedema, which can obscure white matter (WM) fibre orientation through increased isotropic diffusion resulting in diffusion-weighted signal properties resembling grey matter (GM)
Yang JY, Alateras O, Tournier JD, Genc S.   +3 more
europepmc   +4 more sources

Probabilistic fiber tracking using the residual bootstrap with constrained spherical deconvolution. [PDF]

Hum Brain Mapp, 2011
Abstract Constrained spherical deconvolution (CSD) is a new technique that, based on high‐angular resolution diffusion imaging (HARDI) MR data, estimates the orientation of multiple intravoxel fiber populations within regions of complex white matter architecture, thereby overcoming the limitations of the widely ...
Jeurissen B, Leemans A, Jones DK, Tournier JD, Sijbers J.   +4 more
europepmc   +7 more sources

Tracking white-matter brain modifications in chronic non-bothersome acoustic trauma tinnitus

NeuroImage: Clinical, 2021
Subjective tinnitus is a symptom characterized by the perception of sound with no external acoustic source, most often accompanied by co-morbidities. To date, the specific role of white matter abnormalities related to tinnitus reaches no consensus in the
Chloé Jaroszynski, Arnaud Attyé, Agnès Job, Chantal Delon-Martin   +3 more
doaj   +1 more source

Reduced structural connectivity in cortico-striatal-thalamic network in neonates with congenital heart disease

NeuroImage: Clinical, 2020
Impaired brain development has been observed in newborns with congenital heart disease (CHD). We performed graph theoretical analyses and network-based statistics (NBS) to assess global brain network topology and identify subnetworks of altered ...
Megan Ní Bhroin, Samy Abo Seada, Alexandra F. Bonthrone, Christopher J. Kelly, Daan Christiaens, Andreas Schuh, Maximilian Pietsch, Jana Hutter, J-Donald Tournier, Lucillio Cordero-Grande, Daniel Rueckert, Joseph V. Hajnal, Kuberan Pushparajah, John Simpson, A. David Edwards, Mary A. Rutherford, Serena J. Counsell, Dafnis Batalle   +17 more
doaj   +1 more source

Cortical and Subcortical Connections of the Human Claustrum Revealed In Vivo by Constrained Spherical Deconvolution Tractography [PDF]

Cerebral Cortex, 2013
The claustrum is a thin layer of gray matter that is at the center of an active scientific debate. Recently, Constrained Spherical Deconvolution (CSD) tractography has proved to be an extraordinary tool allowing to track white matter fibers from cortex to cortical and subcortical targets with subvoxel resolution.
MILARDI, Demetrio, BRAMANTI, Placido, Milazzo C., FINOCCHIO, Giovanni, Arrigo A., SANTORO, Giuseppe, TRIMARCHI, Fabio, QUARTARONE, Angelo, ANASTASI, Giuseppe Pio, GAETA, Michele   +9 more
openaire   +3 more sources

Greater volumes of a callosal sub-region terminating in posterior language-related areas predict a stronger degree of language lateralization: A tractography study.

PLoS ONE, 2022
Language lateralization is the most intriguing trait of functional asymmetry for cognitive functions. Nowadays, ontogenetic determinants of this trait are largely unknown, but there are efforts to find its anatomical correlates.
Victor Karpychev, Tatyana Bolgina, Svetlana Malytina, Victoria Zinchenko, Vadim Ushakov, Grigory Ignatyev, Olga Dragoy   +6 more
doaj   +3 more sources

Random Action of Compact Lie Groups and Minimax Estimation of a Mean Pattern [PDF]

, 2011
This paper considers the problem of estimating a mean pattern in the setting of Grenander's pattern theory. Shape variability in a dataset of curves or images is modeled by the random action of elements in a compact Lie group on an infinite dimensional ...
Gadat, Sébastien, Bigot, Jérémie, Christophe, Claire, Claire, Christophe   +3 more
core   +1 more source