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Enhancing photon-counting computed tomography reconstruction via subspace dictionary learning and spatial sparsity regularization.
Quant Imaging Med Surg
January 2025
Henan Key Laboratory of Imaging and Intelligent Processing, Information Engineering University, Zhengzhou, China.
Background: Photon-counting computed tomography (CT) is an advanced imaging technique that enables multi-energy imaging from a single scan. However, the limited photon count assigned to narrow energy bins leads to increased quantum noise in the reconstructed spectral images. To address this issue, leveraging the prior information in the spectral images is essential.
View Article and Find Full Text PDFSex differences in cognition, anxiety-phenotype and therapeutic effect of metformin in the aged apoE-TR mice.
Biol Sex Differ
January 2025
Department of Neurosurgery, Neurosurgery Research Institute, Institute of Neurology, Fujian Provincial Institutes of Brain Disorders and Brain Sciences, The First Affiliated Hospital, Binhai Branch of National Regional Medical Center, Fujian Medical University, Fuzhou, Fujian, 350005, China.
Background: Apolipoprotein E4 (ApoE4) is associated with an increased risk of Alzheimer's disease (AD), depression, and anxiety, which were reported to improve after the administration of metformin. However, sex influence on the effect of ApoE4 and metformin on cognition and mental health is poorly understood.
Methods: ApoE3-TR and apoE4-TR mice of both sexes were randomly assigned to the normal saline and metformin groups from 13 months to 18 months of age.
Predictors of evacuation behavior: dataset on respondents' route choice and web interaction.
Sci Data
January 2025
Department of Psychology, Faculty of Arts, Masaryk University, Brno, Czech Republic.
Empirical data on human evacuation behavior are invaluable for adjusting and training computational algorithms that simulate evacuation processes, including agent-based modeling. We provide a dataset on human decision-making during evacuations from virtual buildings, captured using experimental methods that controlled specific building layout parameters. An online experiment assigned participants a random subset of tasks featuring T-intersections.
View Article and Find Full Text PDFCategorization is an essential task for sensory perception. Individuals learn category labels using a variety of strategies to ensure that sensory signals, such as sounds or images, can be assigned to proper categories. Categories are often learned on the basis of extreme examples, and the boundary between categories can differ among individuals.
View Article and Find Full Text PDFReliability of radiomics features as imaging biomarkers for evaluating brain aging: A study based on myelin protein and diffusion tensor imaging.
Neuroimage
January 2025
Center for Rehabilitation Medicine, Department of Radiology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China. Electronic address:
Radiomics has made considerable progress in neurodegenerative diseases. However, previous studies only explored the feasibility of radiomics in clinical applications. Therefore, the objective of this study was to obtain the most relevant radiomics features with the aging changes of myelin proteins and compare their diagnostic performances with the diffusion tensor imaging (DTI) parameters to identify the reliability of these features as imaging biomarkers for assessing brain aging.
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