Results 31 to 40 of about 156,789 (313)

Advanced multimodality neuroimaging of a giant, thrombosed MCA aneurysm complicated by an acute stroke in a pediatric patient

Radiology Case Reports, 2020
A 17-year-old boy presented to our quaternary hospital because of acute mental status changes following prolonged gastrointestinal illness resulting in dehydration.
Gunes Orman, MD, Hardik A. Valand, BSc, Thierry A.G.M. Huisman, MD   +2 more
doaj   +1 more source

Variational denoising of diffusion weighted MRI

Inverse Problems and Imaging, 2009
In this paper, we present a novel variational formulation for restoring high angular resolution diffusion imaging (HARDI) data. The restoration formulation involves smoothing signal measurements over the spherical domain and across the 3D image lattice.
McGraw, Tim, Vemuri, Baba, Özarslan, Evren, Chen, Yunmei, Mareci, Thomas   +4 more
openaire   +2 more sources

Probabilistic Anatomical Connectivity Derived from the Microscopic Persistent Angular Structure of Cerebral Tissue

, 2005
Recently developed methods to extract the persistent angular structure (PAS) of axonal fibre bundles from diffusion-weighted magnetic resonance imaging (MRI) data are applied to drive probabilistic fibre tracking, designed to provide estimates of ...
Parker, Geoffrey J M, Parker, GJM, Alexander, DC, Alexander, Daniel C.   +3 more
core   +1 more source

Fiber tracking in q-ball fields using regularized particle trajectories [PDF]

, 2005
Most of the approaches dedicated to fiber tracking from diffusion-weighted MR data rely on a tensor model. However, the tensor model can only resolve a single fiber orientation within each imaging voxel.
Le Bihan, D, Cointepas, Y., Golestani, N, Constantinesco, A, D. Rivière, Cointepas, Y, A. Constantinesco, Poupon, C., C. Pallier, J. -F. Mangin, Y. Cointepas, Perrin, M, Riviere, D, Constantinesco, A., Perrin, M., D. Le Bihan, M. Perrin, Rieul, B, Golestani, N., Pallier, C., Rieul, B., Mangin, J. F., B. Rieul, Le Bihan, D., C. Poupon, N. Golestani, Mangin, JF, Rivière, D., Pallier, C, Poupon, C   +29 more
core   +1 more source

Finsler geometry on higher order tensor fields and applications to high angular resolution diffusion imaging. [PDF]

, 2009
We study 3D-multidirectional images, using Finsler geometry. The application considered here is in medical image analysis, specifically in High Angular Resolution Diffusion Imaging (HARDI) (Tuch et al. in Magn. Reson. Med.
Florack, L.M.J., Luc Florack, Florack, Luc, Florack, LMJ Luc, Astola, Laura, Florack, L., Astola, LJ Laura, Laura Astola, Astola, L.J., Astola, L.   +9 more
core   +1 more source

Diagnosis of recurrent cholesteatoma using diffusion weighted MRI

The Egyptian Journal of Radiology and Nuclear Medicine, 2015
Objective: To assess the role of diffusion weighted images (DWI) MRI in differentiating post mastoidectomy recurrent cholesteatoma from infected postoperative granulation tissue. Materials and methods: 13 patients who performed mastoidectomy for previous
Ahmed Fathy Abdel Ghany
doaj   +1 more source

Super‐Refractory Status Epilepticus (SRSE) in a Patient With Compound Heterozygous OPA1 Variants: Case Report and Literature Review

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi, Lara Basovic, Christopher Michael McGraw   +2 more
wiley   +1 more source

Diagnostic accuracy of diffusion weighted MRI in cervical lymphadenopathy cases correlated with pathology results

The Egyptian Journal of Radiology and Nuclear Medicine, 2014
Introduction: Diffusion weighted magnetic resonance imaging (DW MRI) is an imaging technique showing molecular diffusion. Cell size, density and integrity influence the signal intensity seen on diffusion-weighted images.
Noha Abd ElShafy ElSaid, Omnia Mokhtar Mohamed Nada, Yomna Sameh Habib, Ahmed Reda Semeisem, Nagat Mansour Khalifa   +4 more
doaj   +1 more source

Structural and functional connectivity reconstruction with CATO - A Connectivity Analysis TOolbox

NeuroImage, 2023
We describe a Connectivity Analysis TOolbox (CATO) for the reconstruction of structural and functional brain connectivity based on diffusion weighted imaging and resting-state functional MRI data.
Siemon C. de Lange, Koen Helwegen, Martijn P. van den Heuvel   +2 more
doaj   +1 more source

Microstructural parameter estimation in vivo using diffusion MRI and structured prior information.

, 2016
Diffusion MRI has recently been used with detailed models to probe tissue microstructure. Much of this work has been performed ex vivo with powerful scanner hardware, to gain sensitivity to parameters such as axon radius.
Weiskopf, N, Weiskopf, N. ; https://orcid.org/, Zoltan Nagy, Chris A. Clark, Clark, CA, Clayden, JD, Alexander, DC, Nikolaus Weiskopf, Nagy, Z, Alexander, D., Nagy, Z., Clark, C., Jonathan D. Clayden, Daniel C. Alexander, Clayden, J.   +14 more
core   +1 more source