Results 291 to 300 of about 642,698 (337)

Fractional anisotropy-based divisions of midsagittal corpus callosum

NeuroReport, 2005
The authors first divided the midsagittal corpus callosum of 22 healthy volunteers using three different subdivision methods: Witelson's geometric subdivision, boundary model-based subdivision, and medial model-based subdivision. Next, subdivisions of the corpus callosum were clustered on the basis of homogeneity of the fractional anisotropy values as ...
Jungsu S, Oh, Kwang, Suk Park, In, Chan Song, Seog, Ju Kim, Jaeuk, Hwang, Ain, Chung, In, Kyoon Lyoo   +6 more
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Fractional anisotropy to quantify cervical spondylotic myelopathy severity

Journal of Neurosurgical Sciences, 2018
A number of clinical tools exist for measuring the severity of cervical spondylotic myelopathy (CSM). Several studies have recently described the use of non-invasive imaging biomarkers to assess severity of disease. These imaging markers may provide an additional tool to measure disease progression and represent a surrogate marker of response to ...
Rory K, Murphy, Peng, Sun, Rowland H, Han, Kim J, Griffin, Joanne, Wagner, Chester K, Yarbrough, Neill M, Wright, Ian G, Dorward, K Daniel, Riew, Michael P, Kelly, Paul, Santiago, Lukas P, Zebala, Kathryn, Trinkaus, Wilson Z, Ray, Sheng-Kwei, Song   +14 more
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Fractional anisotropy correlates with auditory simple reaction time performance

Brain Research, 2007
During the last two decades, modern imaging studies focused intensively on the broad field of reaction time paradigms and significantly enhanced the understanding of behavioral performance. However, interindividual variations of simple reaction time (SRT) have been barely investigated.
Stefan, Böhr, Daniel, Güllmar, René, Knab, Jürgen R, Reichenbach, Otto W, Witte, Jens, Haueisen   +5 more
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Estimation of free water-corrected microscopic fractional anisotropy

2022
AbstractWater diffusion anisotropy MRI is sensitive to microstructural changes in the brain that are hallmarks of various neurological conditions. However, conventional metrics like fractional anisotropy are confounded by neuron fiber orientation dispersion, and the relatively low resolution of diffusion-weighted MRI gives rise to significant free ...
Nico J. J. Arezza, Mohammad Omer, Corey A. Baron   +2 more
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Navigational skills correlate with hippocampal fractional anisotropy in humans

Hippocampus, 2008
AbstractIndividuals vary widely in their ability to orient within the environment. We used diffusion tensor imaging to investigate whether this ability, as measured by navigational performance in a virtual environment, correlates with the anatomic structural properties of the hippocampus, i.e., fractional anisotropy. We found that individuals with high
Giuseppe, Iaria, Linda J, Lanyon, Christopher J, Fox, Deborah, Giaschi, Jason J S, Barton   +4 more
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Fractional Anisotropy in Three Variants of Primary Progressive Aphasia

European Neurology, 2012
<b><i>Objective:</i></b> Our aim was to report diffusion tensor imaging (DTI) patterns in three patients, each with a different primary progressive aphasia (PPA) variant. <b><i>Design:</i></b> One agrammatic PPA, one semantic PPA, and one logopenic PPA subject underwent a magnetic resonance imaging ...
Eloi, Magnin, Françoise, Cattin, Pierre, Vandel, Jean, Galmiche, Thierry, Moulin, Lucien, Rumbach   +5 more
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FRACTIONAL DIFFUSION-LIMITED AGGREGATION: ANISOTROPY ORIGINATING FROM MEMORY

Fractals, 2019
This paper introduces a modified DLA model, based on a fractional diffusion mechanism, as a novel approach to modeling fractal growth. The specific memory performance of fractional operators can be reflected macroscopically in aggregated patterns eventually.
YUPIN WANG, SHUTANG LIU, HUI LI
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Soft-Tissue Sarcomas demonstrate Fractional Anisotropy in Diffusion Tensor Imaging and Fractional Anisotropy Values Change After Treatment

ISMRM Annual Meeting
In previous studies average values of Apparent Diffusion Coefficient (ADC) have been shown to change significantly after radiotherapy in Soft-Tissue Sarcomas (STS). In this study we evaluate the Fractional Anisotropy (FA) of STS before and after treatment and demonstrate that (i) tumours can exhibit significant diffusion anisotropy, and (ii) changes in
Imogen Thrussell, Jessica Winfield, Sadiq Usman, Jennifer Newman, Georgina Hopkinson, Shane Zaidi, Aisha Miah, Christina Messiou, Matthew Blackledge   +8 more
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Microscopic fractional anisotropy with free water elimination

ISMRM Annual Meeting
Water diffusion anisotropy is a diffusion MRI metric that is sensitive to brain injury and neurodegeneration. Microscopic fractional anisotropy (μFA) is a new metric of diffusion anisotropy that is immune to crossing fiber effects, unlike traditional FA, which enables probing of axon integrity in gray matter and crossing white matter tracts.
Nico Arezza, Mohammad Omer, Corey Baron
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Reliability of Fractional Anisotropy Measurement for Children with Cerebral Palsy

Neuropediatrics, 2013
Periventricular leukomalacia (PVL) is the leading cause of disability in children with cerebral palsy (CP). Diffusion tensor imaging (DTI) is a magnetic resonance imaging technique for detecting microstructural lesions of white matter. Fractional anisotropy (FA) is a widely used DTI index with clinical significance in children with CP.
Kyunghoon, Min, Su Jin, Yu, Ji Hyun, Lee, Junyoung, Song, Jae Sun, Shim, Hee Song, Lee, Sang Heum, Kim, MinYoung, Kim   +7 more
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