Results 81 to 90 of about 1,179,474 (190)

Retinal neurovascular alterations are associated with optic radiation microstructure in adrenomyeloneuropathy: A susceptibility separation MRI study

VIEW, EarlyView.
In a cross‐sectional cohort of 104 participants, 7 T susceptibility separation MRI and diffusion imaging were combined with retinal imaging and visual evoked potentials to characterize visual pathway involvement in adrenomyeloneuropathy (AMN). Absolute diamagnetic susceptibility, a myelin‐associated measure, and fractional anisotropy (FA) showed ...
Ronghao Li, Jun Li, Chongyi Li, Xingang Wang, Wenyu Zhou, Yangcheng Zou, Zhiming Zhen, Li Xiao, Na Liang, Zongxing Zou, Junru Yang, Hui Yang, Chunhua Fu, Weiqi Chen, Yuyu Chen, Chen Liu, Hongjiang Wei, Liang Tan   +17 more
wiley   +1 more source

MR Diffusion Tractography

, 2013
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
Jbabdi, S, Behrens, TEJ, Sotiropoulos, SN, Jbabdi, Saad   +3 more
core   +1 more source

Real‐Time Rendering of Dynamic Line Sets using Voxel Ray Tracing

Computer Graphics Forum, EarlyView.
Abstract Real‐time rendering of dynamic line sets is relevant in many visualization tasks, including unsteady flow visualization and interactive white matter reconstruction from Magnetic Resonance Imaging. High‐quality global illumination and transparency are important for conveying the spatial structure of dense line sets, yet remain difficult to ...
B. Kraaijeveld, A.C. Jalba, A. Vilanova, M. Chamberland   +3 more
wiley   +1 more source

High-field magnetic resonance imaging of the human temporal lobe

NeuroImage: Clinical, 2015
Background: Emerging high-field diffusion weighted MR imaging protocols, along with tractography, can elucidate microstructural changes associated with brain disease at the sub-millimeter image resolution.
Luis M. Colon-Perez, Michael King, Mansi Parekh, Angelique Boutzoukas, Eduardo Carmona, Michelle Couret, Rosemary Klassen, Thomas H. Mareci, Paul R. Carney   +8 more
doaj   +1 more source

Tubes or Ribbons? Comparing Texture‐space Visualization for Multivariate Line Data

Computer Graphics Forum, EarlyView.
Abstract Multivariate line data is critical for analyzing flow fields, agent systems, and dynamic trajectories. Embedding secondary variables along spatial paths using surface‐based primitives such as ribbons and circular tubes introduces challenges related to perspective, scale, and distortion.
B. Russig, R. Rzayev, R. Dachselt, S. Gumhold   +3 more
wiley   +1 more source

A systematic review of DTI studies in Bipolar Disorder [PDF]

, 2012
Includes bibliographical references.In the last decade, multiple diffusion tensor imaging (DTI) studies have revealed changes in the microstructure of white matter in bipolar disorder.
Nortje, Gareth
core   +1 more source

Identification of Superficial White Matter Abnormalities in Alzheimer’s Disease and Mild Cognitive Impairment Using Diffusion Tensor Imaging

Journal of Alzheimer's Disease Reports, 2020
Background: Diffusion tensor imaging (DTI) estimates the microstructural alterations of the brain, as a magnetic resonance imaging (MRI)-based neuroimaging technique.
Bahare Bigham, Seyed Amir Zamanpour, Fariba Zemorshidi, Farzaneh Boroumand, Hoda Zare,   +5 more
doaj   +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

Probabilistic tractography

Tractography techniques map white matter bundles in the brain using diffusion magnetic resonance imaging (dMRI) data. These techniques use models to calculate paths where water molecule diffusion is least hindered, assuming these paths approximate the ...
Sotiropoulos, Stamatios N., Aydogan, Dogu Baran, Descoteaux, Maxime, Girard, Gabriel, Dell’Acqua, Flavio, Leemans, Alexander   +5 more
core   +1 more source

FMRI guided DTI at the grey-white matter interface : with application to a connectivity analysis of the default mode network in Urbach-Wiethe disease [PDF]

, 2011
Includes abstract.Includes bibliographical references.The cerebral cortex is composed of a thin layer of Grey Matter (GM), functionally subdivided into discrete regions which are connected in a large scale network via White Matter (WM) tracts. With fMRI (
Baasch, Roland
core   +1 more source