Results 31 to 40 of about 1,793,268 (362)

Magnetic resonance imaging methodology [PDF]

European Journal of Nuclear Medicine and Molecular Imaging, 2008
Magnetic resonance (MR) methods are non-invasive techniques to provide detailed, multi-parametric information on human anatomy, function and metabolism. Sensitivity, specificity, spatial and temporal resolution may, however, vary depending on hardware (e.g., field strength, gradient strength and speed) and software (optimised measurement protocols and ...
Andreas Stadlbauer, Christian Windischberger, Mark E. Ladd, Ewald Moser, Harald H. Quick   +4 more
openaire   +4 more sources

Linear Systems Analysis of Functional Magnetic Resonance Imaging in Human V1

Journal of Neuroscience, 1996
The linear transform model of functional magnetic resonance imaging (fMRI) hypothesizes that fMRI responses are proportional to local average neural activity averaged over a period of time.
G. Boynton, S. Engel, G. Glover, D. Heeger   +3 more
semanticscholar   +1 more source

The Evaluation of Zoomed Echo-Planar Diffusion-Weighted Magnetic Resonance Imaging With Two-dimensional Spatial-Selective Radiofrequency Excitation Pulses in Patients With Hilar Cholangiocarcinoma

Frontiers in Oncology, 2022
BackgroundWe aimed to investigate the feasibility and application of using the zoomed diffusion-weighted echo-planar imaging (z-EPI DWI) sequences for hilar cholangiocarcinoma assessment compared with conventional single-shot EPI diffusion-weighted ...
Jingjing Liu, Mengyue Huang, Yanan Ren, Man Xu, Yinhua Li, Jingliang Cheng, Jinxia Zhu   +6 more
doaj   +1 more source

Microwave ablation of multifocal primary liver cancer guided by real-time 3.0T MRI

International Journal of Hyperthermia, 2023
Objective To investigate the feasibility and efficacy of real-time 3.0 T magnetic resonance imaging (MRI) guided percutaneous microwave ablation (MWA) in the treatment of multifocal liver cancer.Methods A total of 76 lesions in 26 patients with ...
Fenghai Liu, Baozhou Hou, Zhuofu Li, Lei Zhang, Yingwen Zhou, Hao Bian, Zhaoyang Huo   +6 more
doaj   +1 more source

Cardiovascular magnetic resonance imaging

Medicine, 2010
MRI (magnetic resonance imaging) uses the magnetic properties of the hydrogen nucleus, radio waves and powerful magnets to provide high-quality still and cine images of the cardiovascular system, with and without the use of exogenous contrast (gadolinium).
Karamitsos, T, Neubauer, S
openaire   +4 more sources

REST: A Toolkit for Resting-State Functional Magnetic Resonance Imaging Data Processing

PLoS ONE, 2011
Resting-state fMRI (RS-fMRI) has been drawing more and more attention in recent years. However, a publicly available, systematically integrated and easy-to-use tool for RS-fMRI data processing is still lacking.
Xiaowei Song, Zhangye Dong, X. Long, Sufang Li, X. Zuo, Chaozhe Zhu, Yong He, Chaogan Yan, Y. Zang   +8 more
semanticscholar   +1 more source

Altered local intrinsic neural activity and molecular architecture in internet use disorders

Brain Research Bulletin
Background: Internet gaming disorder (IGD) is mainly characterized by its core dysfunction in higher-order brain cortices involved in inhibitory control, whose neurobiological basis remains unclear.
Longyao Ma, Qiuying Tao, Jinghan Dang, Jieping Sun, Xiaoyu Niu, Mengzhe Zhang, Yimeng Kang, Weijian Wang, Jingliang Cheng, Shaoqiang Han, Yong Zhang   +10 more
doaj   +1 more source

Brain network construction and analysis for patients with mild cognitive impairment and Alzheimer's disease based on a highly‐available nodes approach

Brain and Behavior, 2021
Introduction Using brain network and graph theory methods to analyze the Alzheimer's disease (AD) and mild cognitive impairment (MCI) abnormal brain function is more and more popular. Plenty of potential methods have been proposed, but the representative
Xiaopan Zhang, Junhong Liu, Yuan Chen, Yanan Jin, Jingliang Cheng, for the Alzheimer’s Disease Neuroimaging Initiative   +5 more
doaj   +1 more source

Structure–Relaxivity Relationships of Magnetic Nanoparticles for Magnetic Resonance Imaging

Advances in Materials, 2019
Magnetic nanoparticles (MNPs) have been extensively explored as magnetic resonance imaging (MRI) contrast agents. With the increasing complexity in the structure of modern MNPs, the classical Solomon–Bloembergen–Morgan and the outer‐sphere quantum ...
Zijian Zhou, Lijiao Yang, Jinhao Gao, Xiaoyuan Chen   +3 more
semanticscholar   +1 more source

The clinical importance of white matter hyperintensities on brain magnetic resonance imaging: systematic review and meta-analysis

British medical journal, 2010
Objectives To review the evidence for an association of white matter hyperintensities with risk of stroke, cognitive decline, dementia, and death. Design Systematic review and meta-analysis. Data sources PubMed from 1966 to 23 November 2009.
S. Debette, H. Markus
semanticscholar   +1 more source