Results 121 to 130 of about 33,176 (226)

MR Diffusion Tractography

, 2014
In this chapter we describe the underlying principles and most common techniques in diffusion tractography. We cover deterministic streamline tractography and several different probabilistic approaches. We aim to provide a conceptual understanding of the
Saad Jbabdi, Timothy E.J. Behrens, Stamatios N. Sotiropoulos   +2 more
core   +1 more source

Muscle morphology and intramuscular fat after treatment‐as‐usual including botulinum neurotoxin A injections in children with cerebral palsy

Developmental Medicine &Child Neurology, EarlyView.
Normalized muscle volume remained unchanged in all evaluated muscles after the 12‐month treatment‐as‐usual in children with cerebral palsy. Higher intramuscular fat fraction was observed in the medial gastrocnemius, suggesting concurrent intramuscular fat infiltration.
Zhongzheng Wang, Antea Destro, Alexandra Åhblom, Sven Petersson, Ferdinand Von Walden, Eva Pontén, Cecilia Lidbeck, Ruoli Wang   +7 more
wiley   +1 more source

Analysis of Muscle Fibre Orientation in the Human Medial and Lateral Pterygoid Muscles Using Diffusion Tensor Imaging: A Methodological Study

Journal of Oral Rehabilitation, EarlyView.
This study used diffusion tensor imaging (DTI) tractography to assess in vivo 3D muscle fibre orientation of the medial and lateral pterygoid muscles in ten healthy men. Scans were performed at simulated mandibular rest and 25‐mm open‐mouth positions. DTI tractography successfully visualised the internal fibre architecture. During mouth opening, marked
Shiori Kinomura, Takehiko Sugano, Yasuko Tatewaki, Kentaro Oba, Kenta Shobara, Toru Ogawa, Yasuyuki Taki, Kuniyasu Niizuma, Ryuta Kawashima, Keiichi Sasaki, Nobuhiro Yoda   +10 more
wiley   +1 more source

Integration of FMRI and probabilistic tractography for cerebral network analysis

, 2006
We present a data acquisition and analysis methodology for generating anatomical connectivity matrices using fMRI and diffusion MRI tractography. We describe a protocol for distortion-free, high spatial resolution diffusion MRI suitable for probabilistic
Parker, G.J.M., Lambon-Ralph, M.A., Haroon, H.A., Embleton, K.V., Morris, D.M.   +4 more
core   +4 more sources

Atlas-Based Templates vs. Subject-Specific Tractography: Resolving the Debate [PDF]

The first annual International Society of Tractography (IST) debate in Corsica in 2024 explored key challenges and controversies in tractography. This article examines the debate sparked by the provocative statement, "Tractography cannot give us anything
Sotiropoulos, Stamatios N, O’Donnell, Lauren J, Schilling, Kurt G, Vergani, Francesco, Rokem, Ariel, Zhang, Fan, Tournier, J-Donald, O’Donnell, Lauren J., Schilling, Kurt G., Sotiropoulos, Stamatios N., Tournier, J. Donald   +10 more
core   +1 more source

Validation of in vitro probabilistic tractography

NeuroImage, 2007
Diffusion weighted imaging (DWI) and tractography allow the non-invasive study of anatomical brain connectivity. However, a gold standard for validating tractography of complex connections is lacking. Using the porcine brain as a highly gyrated brain model, we quantitatively and qualitatively assessed the anatomical validity and reproducibility of in ...
Tim B. Dyrby, Lise V. Søgaard, Geoffrey J. M. Parker, Daniel C. Alexander, Nanna M. Lind, William F. C. Baaré, Anders Hay-Schmidt, Nina Eriksen, Bente Pakkenberg, Olaf B. Paulson, Jacob Jelsing   +10 more
openaire   +3 more sources

Tractography pipeline.

, 2012
The tractography pipeline employed in this paper, from data acquisition to tract segmentations and tract metrics. At each step, several potential error sources are given.
Walter H. Backes (161847), Geke M. Overvliet (173906), Maarten J. Vaessen (173911), Hilde M. H. Braakman (173917), René M. H. Besseling (173895), Paul A. M. Hofman (173921), Albert P. Aldenkamp (173927), Jacobus F. A. Jansen (173901)   +7 more
core   +1 more source

Tractography Challenge ISMRM 2015 Videos

, 2017
<p>These videos supplement the Tractography Challenge ISMRM 2015 </p ...
Neher, Peter, Houde, Jean-Christophe, Caruyer, Emmanuel (5202739), Descoteaux, Maxime (5202748), Descoteaux, Maxime, Daducci, Alessandro (731461), Dyrby, Tim, Stieltjes, Bram, Daducci, Alessandro, Maier-Hein, Klaus, Houde, Jean-Christophe (5202742), Stieltjes, Bram (5202745), Caruyer, Emmanuel, Neher, Peter (5202736), Maier-Hein, Klaus (5202751), Dyrby, Tim (5202733)   +15 more
core   +1 more source

Multiscale four‐dimensional imaging of cardiac remodelling after myocardial infarction

The Journal of Physiology, EarlyView.
Abstract figure legend Multiscale 4D imaging framework for integrated phenotyping of post‐infarction remodelling. Myocardial infarction triggers dynamic changes across mechanical, haemodynamic and biological axes, progressing from acute injury and inflammation to extracellular matrix remodelling and scar maturation.
Hanzhou Lei, Boris Martinac, Yang Guo
wiley   +1 more source

Massive Particles for Brain Tractography [PDF]

, 2010
We propose a method for estimating axonal fiber connectivity pathways (cerebral connectivity fibers) from Multi-Tensor Diffusion Magnetic Resonance Imaging (MTD-MRI). Our method uses multiple local orientation information provided by MTD-MRI for leading stochastic walks of particles.
Ramón Aranda, Mariano Rivera, Alonso Ramirez-Manzanares, Manzar Ashtari, James C. Gee   +4 more
openaire   +2 more sources