Results 251 to 260 of about 436,409 (287)

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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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-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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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 and diffusivity changes in thyroid-associated orbitopathy

Neuroradiology, 2016
To investigate the extraocular muscle (EOM) changes in thyroid-associated orbitopathy (TAO) on DTI and the correlations between DTI parameters and clinical features.Twenty TAO patients and 20 age- and sex-matched controls provided informed consent and were enrolled. Ten-directional DTI was acquired in orbit. Fractional anisotropy (FA), mean, axial, and
Ji Sung Han, Hyung Suk Seo, Young Hen Lee, Hwa Lee, Sang-il Suh, Eun-Kee Jeong, Nabraj Sapkota, Ki Joon Kim   +7 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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Anisotropy fractions in patients with spastic paraparesis

2014
Aims and objectives: MAIN OBJECTIVE: To determine if patients with spastic paraparesis present anomalies in anisotropy fraction in comparison to healthy...
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Interpreting material anisotropy through the fractional wave equation

Ultrasonics
In the fields of structural health monitoring and non-destructive evaluation (NDE), guided waves are often used for detection of material and structural defects. In this research, we have developed a comprehensive understanding of the generalized superelliptical form of the 2D scalar wave (Helmholtz) equation to predict structural features in ...
Ghatu Subhash, Michael MacIsaac, Charlie Tran, Amanda Beck, Woohyun Eum, Joel B. Harley   +5 more
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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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Anisotropy and isotropy: A model of fraction-dimensional space

Solid State Communications, 1990
Abstract A model of fraction-dimensional space is proposed for dealing with anisotropic interactions. An anisotropic solid is treated as an isotropic fraction-dimensional system whose dimension is determined by the degree of anisotropy. It is found that the densities of states calculated with the fraction-dimensional model are in good accordance with
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