Results 91 to 100 of about 7,745 (211)

Mapping the orientation of white matter fiber bundles: A comparative study of diffusion Tensor Imaging, diffusional kurtosis imaging, and diffusion spectrum imaging

, 2016
[[abstract]]BACKGROUND AND PURPOSE: White matter fiber tractography relies on fiber bundle orientation estimates from diffusion MR imaging. However, clinically feasible techniques such as DTI and diffusional kurtosis imaging use assumptions, which may ...
Glenn, GR;Kuo, LW;Chao, YP;Lee, CY;Helpern, JA;Jensen, JH
core   +1 more source

Diffusion Kurtosis Imaging of Microstructural Changes in Gray Matter Nucleus in Parkinson Disease

Frontiers in Neurology, 2020
Objective: To explore the microstructural damage of extrapyramidal system gray matter nuclei in Parkinson disease (PD) using diffusion kurtosis imaging (DKI).Materials and Methods: We enrolled 35 clinically confirmed PD patients and 23 healthy volunteers.
Gao Bingbing, Zhou Yujing, Miao Yanwei, Dong Chunbo, Wang Weiwei, Tian Shiyun, Liu Yangyingqiu, Shang Jin, Song Qingwei, Liu Ailian, Xie Lizhi   +10 more
doaj   +1 more source

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

Small, EarlyView.
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

Influence of Surface Roughness and Temperature on Niobium Cathodic Cage Duplex Treatment Applied to VP20TS Steel

steel research international, EarlyView.
Niobium cathodic cage duplex treatment is applied to VP20TS steel to evaluate the influence of surface roughness and temperature on coating performance. Results show that higher temperatures promote thicker nitride layers and increased microhardness, while finer surface preparation enhances adhesion and wear resistance, revealing optimal conditions for
Alan Bruno Costa Cardoso, Ediones Maciel de Sousa, João Rodrigues de Barros Neto, Leandro Almeida Silva, Luciana Sgarbi Rossino, Rômulo Ribeiro Magalhães de Sousa, Marcos Guilherme Carvalho Braulio Barbosa   +6 more
wiley   +1 more source

Microstructural changes of the white matter in systemic lupus erythematosus patients without neuropsychiatric symptoms: a multi-shell diffusion imaging study

Arthritis Research & Therapy
Background Diffusion kurtosis imaging (DKI) and neurite orientation dispersion and density imaging (NODDI) provide more comprehensive and informative perspective on microstructural alterations of cerebral white matter (WM) than single-shell diffusion ...
Wenjun Hu, Ziru Qiu, Qin Huang, Yuhao Lin, Jiaying Mo, Linhui Wang, Jingyi Wang, Kan Deng, Yanqiu Feng, Xinyuan Zhang, Xiangliang Tan   +10 more
doaj   +1 more source

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

Functional Ecology, EarlyView.
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

Recent Developments in Fast Kurtosis Imaging

Frontiers in Physics, 2017
Diffusion kurtosis imaging (DKI) is an extension of the popular diffusion tensor imaging (DTI) technique. DKI takes into account leading deviations from Gaussian diffusion stemming from a number of effects related to the microarchitecture and ...
Brian Hansen, Sune N. Jespersen, Sune N. Jespersen   +2 more
doaj   +1 more source

Optimal deep learning activity recognition pipeline using animal bio‐logging data

Methods in Ecology and Evolution, EarlyView.
Abstract Animal activity recognition using supervised machine learning on bio‐logging data has revolutionized behavioural studies on wildlife and livestock over the past decade. These studies' analytic pipelines differ substantially though, being based on various sensors, features, algorithms and hyperparameter values, which has caused suboptimal or ...
Jasper A. J. Eikelboom
wiley   +1 more source

Diffusion kurtosis imaging of the pancreas for the assessment of HbA1c levels

, 2016
Purpose To evaluate the feasibility of diffusion kurtosis (DK) imaging of the pancreas for the assessment of hemoglobin (Hb) A1c values. Materials and Methods Our Institutional Review Board approved this prospective study and written informed consent was
Kondo, Hiroshi, Kanematsu, Masayuki, Tanahashi, Yukichi, Bae, Kyongtae T., Kawada, Hiroshi, Goshima, Satoshi, Takeda, Jun, Kawai, Nobuyuki, Noda, Yoshifumi, Watanabe, Haruo, Horikawa, Yukio   +10 more
core   +1 more source

The value of diffusion kurtosis imaging to predict early radiotherapy response in nasopharyngeal carcinoma patients

Zhongguo aizheng zazhi, 2018
Background and purpose: Magnetic resonance imaging (MRI) diffusion kurtosis imaging (DKI) is a new non-invasive functional imaging technology, which is the extension and development of diffusion tensor imaging (DTI) technology.
吴　刚, 王　奋, 林少民
doaj