Results 41 to 50 of about 66,811 (263)

Altered regional homogeneity in the development of minimal hepatic encephalopathy: a resting-state functional MRI study. [PDF]

PLoS ONE, 2012
BACKGROUND: Little is known about how spontaneous brain activity progresses from non-hepatic encephalopathy (non-HE) to minimal HE (MHE). The purpose of this study was to evaluate the evolution pattern of spontaneous brain activities in cirrhotic ...
Ling Ni, Rongfeng Qi, Long Jiang Zhang, Jianhui Zhong, Gang Zheng, Zhiqiang Zhang, Yuan Zhong, Qiang Xu, Wei Liao, Qing Jiao, Xingjiang Wu, Xinxin Fan, Guang Ming Lu   +12 more
doaj   +1 more source

Sex‐Stratified Association of Regional Dopamine Transporter Binding With Disease Progression in Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To clarify the clinical relevance of dopamine transporter single‐photon emission computed tomography (DAT‐SPECT) abnormalities in amyotrophic lateral sclerosis (ALS), with a prespecified focus on sex‐stratified associations with disease progression and short‐term prognosis.
Tomoya Kawazoe, Keizo Sugaya, Kentaro Hayashi, Keiko Hino, Yasuhiro Nakata, Kota Bokuda, Toshio Shimizu, Kazushi Takahashi   +7 more
wiley   +1 more source

Alterations in Regional Homogeneity in Patients With Unilateral Chronic Tinnitus

Trends in Hearing, 2019
Chronic subjective tinnitus is a widespread disorder. This perceptual anomaly is assumed to result from a dysbalance of excitatory and inhibitory mechanisms on different levels of the auditory pathways.
Anthony Gentil, Jeremy Deverdun, Nicolas Menjot de Champfleur, Jean-Luc Puel, Emmanuelle Le Bars, Frédéric Venail   +5 more
doaj   +1 more source

Using coherence to measure regional homogeneity of resting-state fMRI signal

Frontiers in Systems Neuroscience, 2010
In this study, we applied coherence to voxel-wise measurement of regional homogeneity of resting-state functional magnetic resonance imaging (RS-fMRI) signal.
Dongqiang Liu, Chaogan Yan, Juejing Ren, Li Yao, Vesa J Kiviniemi, Yufeng Zang   +5 more
doaj   +1 more source

Altered dynamic intrinsic brain activity of the default mode network in Alzheimer’s disease: A resting-state fMRI study

Frontiers in Human Neuroscience, 2022
ObjectiveStatic regional homogeneity (ReHo) based on the resting-state functional magnetic resonance imaging (rs-fMRI) has been used to study intrinsic brain activity (IBA) in Alzheimer’s disease (AD).
Zhengluan Liao, Zhengluan Liao, Wangdi Sun, Xiaozheng Liu, Zhongwei Guo, Dewang Mao, Enyan Yu, Yan Chen   +7 more
doaj   +1 more source

Characterizing Cutaneous α‐Synuclein Deposition and Seeding Activity in Parkinson's Disease Subtypes

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cutaneous phosphorylated α‐synuclein (p‐syn) and α‐synuclein seeding activity are promising biomarkers for Parkinson's disease (PD), but their clinical value remains uncertain due to disease heterogeneity. This study evaluates these two biomarkers in PD patients to inform phenotype‐specific diagnosis and disease severity assessment ...
Yuting Jin, Tianyuan Yang, Minglei Liu, Haiyang Luo, Jing Yuan, Ke Zhang, Xinsheng Han, Jing Yang, Yuming Xu   +8 more
wiley   +1 more source

Perfect imaging in a homogeneous threedimensional region

Optics Express, 2006
We introduce a family of spherically symmetric gradient-index lenses forming a perfect (sharp) image of any point of the space in three dimensions, including the points of a homogeneous (constant refractive index) region. The only previously known example of an optical instrument with such properties is the plane mirror (or combinations thereof).
openaire   +2 more sources

Extraction of Homogeneous Regions in Historical Document Images [PDF]

Proceedings of the 10th International Conference on Computer Vision Theory and Applications, 2015
To reach the objective of ensuring the indexing and retrieval of digitized resources and offering a structured access to large sets of cultural heritage documents, a raising interest to historical document image segmentation has been generated. In fact, there is a real need for automatic algorithms ensuring the identification of homogeneous regions or ...
Maroua Mehri, Pierre Héroux, Nabil Sliti, Petra Gomez-Krämer, Najoua Essoukri Ben Amara, Rémy Mullot   +5 more
openaire   +1 more source

Baseline Neuroinflammation Stratifies TSPO‐PET Response to Disease‐Modifying Therapy in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate which baseline clinical and imaging characteristics best predict TSPO‐PET‐measurable reduction in glial activation following treatment of multiple sclerosis (MS), to utilize this information for designing more efficient biomarker‐based clinical trials targeting glial activation.
Marlene T. Morch, Markus Matilainen, Giulia N. Baldrighi, Marjo Nylund, Maija Saraste, Laura Airas   +5 more
wiley   +1 more source

ONCE AGAIN: TESTING FOR REGIONAL HOMOGENEITY*

Journal of Regional Science, 1987
ABSTRACT. Summarizing the foregoing discussions in this journal on testing for regional homogeneity the present note shows that in the model of Zellner's seemingly unrelated regressions one test statistic may be used not only to test for overall homogeneity but also to examine for individual coefficient homogeneity. This aim is achieved by varying the
openaire   +2 more sources