Results 351 to 360 of about 2,150,188 (381)

Fundamentals of diffusion MRI physics

NMR in Biomedicine, 2017
Diffusion MRI is commonly considered the “engine” for probing the cellular structure of living biological tissues. The difficulty of this task is threefold. First, in structurally heterogeneous media, diffusion is related to structure in quite a complicated way.
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Concepts of Diffusion in MRI

2016
In this chapter, we cover the basic concepts of diffusion from a non-mathematical perspective. From the random walk of a water molecule to the effect of obstacles on diffusion in biological tissue and the basic principles of configuring a magnetic resonance imaging machine to be sensitive to diffusion phenomena.
Uran Ferizi, Daniel C. Alexander, Bernard Siow, Matthew L. Rowe, Simon Richardson   +4 more
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Diffusion MRI Outside the Brain

2019
This manuscript provides an overview of recent developments in Diffusion-Weighted Imaging (DWI) outside the brain, focusing on liver, breast, prostate, muskuloskeletal (MSK) and cardiac applications. A general introduction to cross-cutting acquisition and image processing challenges is first provided. These often include short \(T_2\) relaxation times,
Rita G. Nunes, Luísa Nogueira, Andreia S. Gaspar, Nuno Adubeiro, Sofia Brandão   +4 more
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Background of Diffusion MRI

2019
Decoding human brain structures and their interconnecting trajectories are very exciting research areas since they have numerous applications in the clinical diagnosis and management of brain disorders. For that, a lot of variety of invasive tools have been introduced to study brain white matter structural connectivity and configuration.
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Cardiac Diffusion MRI

2017
The myocardial microstructure and three-dimensional architecture govern the electrical propagation and mechanical function of the heart. Diffusion MRI is a unique method for microstructural characterization of the whole heart, both in vivo and ex vivo.
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Diffusion and Perfusion in MRI

2007
The sections in this article are 1 Introduction 2 Diffusion MRI 3 Perfusion MRI 4 Biographical Sketch Related ...
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Diffusion MRI in the brain – Theory and concepts

Progress in Nuclear Magnetic Resonance Spectroscopy, 2019
Over the past two decades, diffusion MRI has become an essential tool in neuroimaging investigations. This is due to its sensitivity to the motion of water molecules as they diffuse through the microstructural environment, allowing diffusion MRI to be used as a 'probe' of tissue microstructure.
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Diffusion MRI

2012
Since its initial development in the mid-1980s, and wide accessibility to perform diffusion MRI on all MRI scanners, the use of diffusion MRI has become widespread across the last 30 years. This online resource discusses the importance of ensuring that the hardware is performing optimally, the pulse sequence is carefully designed, the acquisition is ...
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Diffusion MRI and spectroscopy in Rasmussen's encephalitis

European Radiology, 2002
The purpose of this study was to evaluate the diffusion MRI and proton MR spectroscopy findings in a rare disorder, Rasmussen's encephalitis. Diffusion MRI studies of 3 cases of Rasmussen's encephalitis were performed using the echo-planar trace sequence (TR=5700 ms, TE=139.03 ms). The gradient-echo diffusion sequence, PSIF (TR=21.6 ms, TE=5 ms), which
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Lithium‐Diffusion Induced Capacity Losses in Lithium‐Based Batteries

Advanced Materials, 2022
David Rehnlund, Zhaohui Wang, Zhaohui Wang   +2 more
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