Results 71 to 80 of about 7,745 (211)

Effects of diffusional kurtosis imaging parameters on diffusion quantification [PDF]

Radiological Physics and Technology, 2013
Diffusional kurtosis imaging (DKI) is a new technique based on non-Gaussian water diffusion analysis. However, the original DKI protocol (six b values and 30 motion-probing gradient (MPG) directions) requires more than 10 min of scanning time, which is too long for daily clinical use. We aimed to find suitable b value, MPG direction, and diffusion time
Fukunaga, Issei, Hori, Masaaki, Masutani, Yoshitaka, Hamasaki, Nozomi, Sato, Shuji, Suzuki, Yuriko, Kumagai, Fumitaka, Kosuge, Masatsugu, Hoshito, Haruyoshi, Kamagata, Koji, Shimoji, Keigo, Nakanishi, Atsushi, Aoki, Shigeki, Senoo, Atsushi   +13 more
openaire   +2 more sources

Postnatal Guinea Pig Brain Development, as Revealed by Magnetic Resonance and Diffusion Kurtosis Imaging

Brain Sciences, 2020
This study used in vivo magnetic resonance imaging (MRI) to identify age dependent brain structural characteristics in Dunkin Hartley guinea pigs. Anatomical T2-weighted images, diffusion kurtosis (DKI) imaging, and T2 relaxometry measures were acquired ...
Roger J. Mullins, Su Xu, Jiachen Zhuo, Steve Roys, Edna F.R. Pereira, Edson X. Albuquerque, Rao P. Gullapalli   +6 more
doaj   +1 more source

Sustainability Reporting Quality, Ethical Leadership, and Earnings Management: Evidence From an Emerging Economy

Business Strategy and the Environment, EarlyView.
ABSTRACT This study analyzes the relationship between sustainability reporting quality (SRQ) and earnings management (EM) in an emerging economy and investigates the moderating role of ethical leadership. Analyzing 531 firm‐year observations from mandatory reports (2022–2024), SRQ is measured via a 51‐indicator index, while EM is proxied by the ...
Taghred Mokhtar Sayed Moawad, Khaled Hussainey, Yara Ibrahim   +2 more
wiley   +1 more source

Positive definiteness of Diffusion Kurtosis Imaging

Inverse Problems and Imaging, 2012
Diffusion Kurtosis Imaging (DKI) is a new Magnetic Resonance Imaging (MRI) model to characterize the non-Gaussian diffusion behavior in tissues. In reality, the term $bD_{app}-\frac{1}{6}b^2D_{app}^2K_{app}$ in the extended Stejskal and Tanner equation of DKI should be positive for an appropriate range of $b$-values to make sense physically.
Shenglong Hu, Zheng-Hai Huang, Hong-Yan Ni, Liqun Qi   +3 more
openaire   +1 more source

Diffusion kurtosis imaging allows the early detection and longitudinal follow-up of amyloid-β-induced pathology

Alzheimer’s Research & Therapy, 2018
Background Alzheimer’s disease (AD) is a progressive neurodegenerative disorder and the most common cause of dementia in the elderly population. In this study, we used the APP/PS1 transgenic mouse model to explore the feasibility of using diffusion ...
Jelle Praet, Nikolay V. Manyakov, Leacky Muchene, Zhenhua Mai, Vasilis Terzopoulos, Steve de Backer, An Torremans, Pieter-Jan Guns, Tom Van De Casteele, Astrid Bottelbergs, Bianca Van Broeck, Jan Sijbers, Dirk Smeets, Ziv Shkedy, Luc Bijnens, Darrel J. Pemberton, Mark E. Schmidt, Annemie Van der Linden, Marleen Verhoye   +18 more
doaj   +1 more source

Bioinspired Crossmodal Tactile Sensory Nerve for High‐Accurate Object Recognition

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
An artificial crossmodal sensory neuron system (ACSNS) that combines a complementary memristor with high‐sensitivity pressure–temperature bimodal sensors, which integrate tactile perception, information storage, and neuromorphic computing. With the aid of machine learning, this ACSNS presents an improved accuracy of 96.67% in recognizing temperatures ...
Delu Chen, Yuetong Han, Xiaodong Wang, Wanli Cheng, Jianjie He, Xing Li, Yoshifumi Oshima, Chongxin Shan, Shaobo Cheng   +8 more
wiley   +1 more source

Multimodal MRI and multiomics reveal high‐risk neurophenotype in brain‐gut circuits as therapeutic target for Crohn's disease

Interdisciplinary Medicine, EarlyView.
Through a translational framework combining prospective dual‐center clinical cohorts with dextran sulfate sodium‐induced colitis models, this work integrated advanced neuroimaging, multi‐omics and neuromodulation interventions to redefine the high‐risk neurophenotype as a sustained pathogenic driver rather than a mere phenomenon, proposing brain‐gut ...
Xuehua Li, Ruonan Zhang, Xiaodi Shen, Shaochun Lin, Chuhuai Wang, Weikai Zheng, Weimiao Kong, Zihao Lin, Rongchang Li, Caiguang Liu, Xin Cao, Li Huang, Weitao He, Jinjiang Lin, Haijie Wang, Zhoulei Li, Marietta Iacucci, Subrata Ghosh, Zhenpeng Peng, Canhui Sun, Minhu Chen, Guang Yang, Yejun Wang, Ren Mao, Shi‐Ting Feng   +24 more
wiley   +1 more source

Influence of Adaptive Denoising on Diffusion Kurtosis Imaging at 3T and 7T

Computer Methods and Programs in Biomedicine, 2023
Choosing the most appropriate denoising method to improve the quality of diagnostic images maximally is key in pre-processing of diffusion MRI images. Recent advancements in acquisition and reconstruction techniques have questioned traditional noise estimation methods favoring adaptive denoising frameworks, circumventing the need to know a priori ...
Rosella Trò, Monica Roascio, Gabriele Arnulfo, Domenico Tortora, Maria Savina Severino, Andrea Rossi 0008, Antonio Napolitano 0002, Marco Massimo Fato   +7 more
openaire   +3 more sources

A two‐stage model for precise identification and Gleason grading of clinically significant prostate cancer: a hybrid approach

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 93-105, March 2025.
This study developed a two‐stage model using radiomics‐based multiparametric MRI and clinical indicators to help identify and grade clinically significant prostate cancer. The model showed promising levels of diagnostic accuracy and predictive performance.
Yuyan Zou, Xuechun Wang, Fen Ma, Xulun Liu, Chunyue Jiao, Zhen Kang, Jingjing Cui, Yang Zhang, Yan Xie, Lei Chen, Ronghua Tian   +10 more
wiley   +1 more source

Phenolic composition and multi‐target bioactivities of Globularia alypum extracts across seasons

JSFA reports, EarlyView.
Abstract Background This study investigates the influence of seasonal variation on the phytochemical profile and biofunctional activities of ethanolic leaf extracts from Globularia alypum. Leaves collected across four seasons were extracted with a hydroethanolic solvent (80:20, v/v) and analyzed by LC‐ESI‐MS/MS.
Mohammed Messaoudi, Khalil Guelift, Mokhtar Benmohamed, Khaled Kherraz, Latifa Khattabi, Afaf Khadra Bendrihem, Khaled Aggoun, Barbara Sawicka, Lilya Harchaoui, Mohamed Amine Ferhat, Salah Neghmouche Nacer, Stefania Garzoli   +11 more
wiley   +1 more source