Results 101 to 110 of about 23,380 (217)

Evaluating 35 Methods to Generate Structural Connectomes Using Pairwise Classification

, 2017
There is no consensus on how to construct structural brain networks from diffusion MRI. How variations in pre-processing steps affect network reliability and its ability to distinguish subjects remains opaque.
A Daducci, BB Avants, BC Wijk Van, C Destrieux, D Greve, DS Bassett, E Garyfallidis, I Aganj, JD Tournier, M Rubinov, P Hagmann, Patric Hagmann, PE Shrout, RS Desikan   +13 more
core   +1 more source

Double dissociation between conduction aphasia and conduction agraphia supports a ventro‐dorsal partition of the left arcuate fasciculus

Journal of Neuropsychology, EarlyView.
Abstract We identified in two awake surgery cases a postoperative double dissociation between phonological and graphemic output buffer deficits. Using lesion‐symptom mapping from ischaemic mini‐strokes and preoperative tractography, we demonstrated that the phonological (resp. graphemic) disorder fitted with ventral (resp.
Valéry Mandonnet, Isabelle Poisson, Francine Chassoux, Bertrand Devaux, Sébastien Froelich, Emmanuel Mandonnet   +5 more
wiley   +1 more source

Architecture of lower leg muscles in children: Reference curves and potential mechanisms of growth

Journal of Anatomy, EarlyView.
Muscle architecture (physiological cross‐sectional area, fascicle lengths and pennation angle) was measured from multimodal MRI scans of the lower legs of 197 children aged ≤15 years. We showed that lower leg muscle volumes (product of PCSA and fascicle length) increase primarily through increases in PCSA (transverse growth) rather than increases in ...
Brian V. Y. Chow, Suzanne Davies, Catherine Morgan, Caroline D. Rae, David I. Warton, Iona Novak, Ann Lancaster, Gordana C. Popovic, Rodrigo R. N. Rizzo, Claudia Y. Rizzo, Iain K. Ball, Robert D. Herbert, Bart Bolsterlee   +12 more
wiley   +1 more source

Clinical Applications for Diffusion MRI and Tractography of Cranial Nerves Within the Posterior Fossa: A Systematic Review

Frontiers in Neuroscience, 2019
Objective: This paper presents a systematic review of diffusion MRI (dMRI) and tractography of cranial nerves within the posterior fossa. We assess the effectiveness of the diffusion imaging methods used and examine their clinical applications.Methods ...
Jonathan Shapey, Jonathan Shapey, Jonathan Shapey, Sjoerd B. Vos, Sjoerd B. Vos, Sjoerd B. Vos, Tom Vercauteren, Robert Bradford, Shakeel R. Saeed, Shakeel R. Saeed, Shakeel R. Saeed, Sotirios Bisdas, Sebastien Ourselin   +12 more
doaj   +1 more source

Nonlinear tube-fitting for the analysis of anatomical and functional structures

, 2011
We are concerned with the estimation of the exterior surface and interior summaries of tube-shaped anatomical structures. This interest is motivated by two distinct scientific goals, one dealing with the distribution of HIV microbicide in the colon and ...
Caffo, Brian, Crainiceanu, Ciprian, Du, Yong, Goldsmith, Jeff, Hendrix, Craig, Reich, Daniel   +5 more
core   +1 more source

Anisotropic Smoothing Improves DT-MRI-Based Muscle Fiber Tractography

PLOS ONE, 2015
To assess the effect of anisotropic smoothing on fiber tracking measures, including pennation angle, fiber tract length, and fiber tract number in the medial gastrocnemius (MG) muscle in healthy subjects using diffusion-weighted magnetic resonance imaging (DW-MRI).3T DW-MRI data were used for muscle fiber tractography in the MG of healthy subjects ...
Buck, Amanda K W, Ding, Zhaohua, Elder, Christopher P, Towse, Theodore F, Damon, Bruce M   +4 more
openaire   +4 more sources

Global tractography with embedded anatomical priors for quantitative connectivity analysis

Frontiers in Neurology, 2014
The main assumption of fiber-tracking algorithms is that fiber trajectories are represented by paths of highest diffusion, which is usually accomplished by following the principal diffusion directions estimated in every voxel from the measured diffusion ...
Alia eLemkaddem, Didrik eSkiöldebrand, Alessandro eDal Palú, Jean-Philippe eThiran, Jean-Philippe eThiran, Alessandro eDaducci, Alessandro eDaducci   +6 more
doaj   +1 more source

Functional and structural connectivity of thalamic subnuclei in major depressive disorder at 7 Tesla

Psychiatry and Clinical Neurosciences, EarlyView.
Aims Major depressive disorder (MDD) is widely considered to be a mood disorder characterized by altered connectivity. The thalamus plays an important role in MDD by connecting large areas of the brain. Here, we explored thalamic connectivity in MDD at the subnuclear level using ultra‐high‐field MRI.
Weijian Liu, Shu Liu, Jurjen Heij, Laurens A. van de Mortel, Luka Liebrand, Matthan Caan, Wietske van der Zwaag, Dick J. Veltman, Lin Lu, Moji Aghajani, Guido van Wingen   +10 more
wiley   +1 more source

Test-Retest Reliability of Diffusion Measures Extracted Along White Matter Language Fiber Bundles Using HARDI-Based Tractography

Frontiers in Neuroscience, 2019
High angular resolution diffusion imaging (HARDI)-based tractography has been increasingly used in longitudinal studies on white matter macro- and micro-structural changes in the language network during language acquisition and in language impairments ...
Mariem Boukadi, Mariem Boukadi, Karine Marcotte, Karine Marcotte, Christophe Bedetti, Jean-Christophe Houde, Alex Desautels, Alex Desautels, Samuel Deslauriers-Gauthier, Marianne Chapleau, Marianne Chapleau, Arnaud Boré, Maxime Descoteaux, Simona M. Brambati, Simona M. Brambati   +14 more
doaj   +1 more source

Structural Characterization of Cardiac Free‐Running Purkinje Fibers Using Inhomogeneous Magnetization Transfer (ihMT): A Proof of Concept MRI‐Histology Approach

NMR in Biomedicine, Volume 39, Issue 6, June 2026.
The cardiac Purkinje network is essential for synchronized ventricular activation but remains difficult to visualize with conventional MRI due to limited structural contrast. This study demonstrates that inhomogeneous magnetization transfer imaging provides enhanced contrast that differentiates free‐running Purkinje fibers, Purkinje‐Myocardial Junction,
Arash Forodighasemabadi, Evgenios N. Kornaropoulos, Marion Constantin, Lucas Soustelle, Fanny Vaillant, Jude Leury, Richard Walton, Olivier Bernus, Bruno Quesson, Olivier M. Girard, Guillaume Duhamel, Julie Magat   +11 more
wiley   +1 more source