Results 101 to 110 of about 6,599 (190)

Standard Model Imaging in the Brain and Spinal Cord of MS Patients: Initial Assessment and Comparison to Diffusion Tensor Imaging

NMR in Biomedicine, Volume 39, Issue 8, August 2026.
DTI and SMIfw diffusion models applied in persons with multiple sclerosis revealed region‐specific sensitivity to microstructural injury, but performance differed by anatomical region. SMIfw neurite density fraction demonstrated high sensitivity and reliability in both the brain and spinal cord, whereas DTI measures such as fractional anisotropy and ...
Atlee Witt, Alicia E. Cronin, Bailey Busher, Isabella Stuart, Grace Sweeney, Kristin P. O'Grady, Seth A. Smith, Samantha By, Kurt Schilling   +8 more
wiley   +1 more source

High‐Resolution Diffusion Kurtosis Imaging of Hippocampus Subfields Across the Healthy Lifespan

NMR in Biomedicine, Volume 39, Issue 8, August 2026.
Developmental and aging changes were examined in the hippocampus using 1 mm isotropic diffusion kurtosis imaging in 363 participants aged 5–90 years. HippUnfold enabled automated subfield segmentation and unfolded hippocampal maps. Whole‐hippocampus showed distinct lifespan trajectories: volume, quadratic; MD, negative Gamma Variate; FA, positive Gamma
Pablo Stack‐Sanchez, Donald W. Gross, Ali R. Khan, Christian Beaulieu   +3 more
wiley   +1 more source

Diffusion Kurtosis Imaging of Substantia Nigra Is a Sensitive Method for Early Diagnosis and Disease Evaluation in Parkinson’s Disease

Parkinson's Disease, 2015
Background. To diagnose Parkinson disease (PD) in an early stage and accurately evaluate severity, it is important to develop a sensitive method for detecting structural changes in the substantia nigra (SN). Method.
Guohua Zhang, Yuhu Zhang, Chengguo Zhang, Yukai Wang, Guixian Ma, Kun Nie, Haiqun Xie, Jianping Liu, Lijuan Wang   +8 more
doaj   +1 more source

Sex dimorphism of cortical water diffusion in normal aging measured by magnetic resonance imaging

Frontiers in Aging Neuroscience, 2013
BackgroundThe purpose of this study was to examine sex dimorphism in water diffusion in the brain throughout the normal aging process by magnetic resonance imaging. MethodsDiffusion-weighted images covering the majority of the brain were acquired from 77
Shu-Hang eNg, Wen-Chiun eHsu, Yau-Yau eWai, Jiann-Der eLee, Hsiao-Lung eChan, YaoLiang eChen, Hon-Chung eFung, YihRu eWu, Ming-Lun eTsai, Jiun-Jie eWang, Jiun-Jie eWang, Jiun-Jie eWang   +11 more
doaj   +1 more source

Testing for Conformity With Parametric Distributions Using Level Sets: From Univariate to Bivariate Applications

Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 4, August 2026.
ABSTRACT Conformity of observed data with a postulated probability distribution is a fundamental problem of statistical modeling. Current tools for checking distributional conformity are often limited to univariate settings, with extensions to multivariate distributions facing challenges in interpretability and power.
Rasha Alsaadawi, Nitai D. Mukhopadhyay
wiley   +1 more source

From armed roots to airline routes in South America: A dual imprinting perspective

Strategic Management Journal, Volume 47, Issue 8, Page 2235-2271, August 2026.
Abstract Reserch Summary We propose that founding partner relationships can leave distinct imprints on organizations that differ in durability and in how they respond to subsequent changes involving the founding partner. Examining South American airlines founded between 1919 and 1984, we argue and find that such relationships simultaneously create an ...
Kunyuan Qiao, Shon R. Hiatt, Wesley D. Sine   +2 more
wiley   +1 more source

Near‐Armchair‐Enriched Growth of Single‐Walled Carbon Nanotubes via W‐Containing Fe‐Based Catalyst Systems in Mist FC‐CVD

Small, Volume 22, Issue 46, 18 August 2026.
A mist‐based floating catalyst chemical vapor deposition (mist FC‐CVD) strategy allows the use of non‐volatile precursors and multi‐component catalyst delivery in a continuous process. Through catalyst composition control, it generates near‐armchair‐enriched single‐walled carbon nanotubes (SWCNTs) and uncovers key factors governing chiral‐angle ...
Hirotaka Inoue, Takamasa Onoki, Akira Takakura, Anastasios Karakassides, Hua Jiang, Toshihiko Fujimori, Esko I. Kauppinen   +6 more
wiley   +1 more source

Assessing GNSS Reflectometry for High‐Latitude 3D Ionospheric Imaging

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract This study investigates whether Global Navigation Satellite System Reflectometry (GNSS‐R) measurements from low‐Earth‐orbit (LEO) satellites can improve three‐dimensional (3D) ionospheric electron density imaging, with a focus on high‐latitude regions. Conventional ionospheric tomography is limited by sparse ground‐based receiver coverage over
Brenna Royersmith, Brian Breitsch, Jade Y. Morton   +2 more
wiley   +1 more source

Aridity‐dependent regulation of water‐use efficiency by leaf vein traits across grassland communities

Functional Ecology, Volume 40, Issue 8, Page 2462-2474, August 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Water transport is a fundamental constraint on plant growth in arid regions. Leaf vein architecture regulates carbon assimilation and transpiration through leaf hydraulic conductance (Kleaf), thereby influencing ecosystem water‐use efficiency (WUE) via community‐level ...
Meixu Han, Xiaochun Wang, Min Ji, Miao Liu, Changju Luo, Qiang Li, Tong Yang, Xiang Li, Yan Gu, Zhibo Wang, Ruili Wang, Nianpeng He   +11 more
wiley   +1 more source

Diffusion Kurtosis and Diffusion-Tensor MR Imaging in Parkinson Disease [PDF]

Radiology, 2012
Giannelli M, Toschi N, Passamonti L, MASCALCHI, MARIO, DICIOTTI, STEFANO, TESSA, CARLO   +5 more
openaire   +5 more sources