NMR-based diffusion pore imaging by double wave vector measurements
نویسندگان
چکیده
منابع مشابه
NMR-based diffusion pore imaging by double wave vector measurements.
One main interest of nuclear magnetic resonance (NMR) diffusion experiments is the investigation of boundaries such as cell membranes hindering the diffusion process. NMR diffusion measurements allow collecting the signal from the whole sample. This mainly eliminates the problem of vanishing signal at increasing resolution. It has been a longstanding question if, in principle, the exact shape o...
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Nuclear magnetic resonance (NMR) diffusion measurements are widely used to derive parameters indirectly related to the microstructure of biological tissues and porous media. However, a direct imaging of cell or pore shapes and sizes would be of high interest. For a long time, determining pore shapes by NMR diffusion acquisitions seemed impossible, because the necessary phase information could n...
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[4] J. Finsterbusch and M. A. Koch, J. Magn. Reson. 195, 23 (2008) [2] Callaghan, P. E. and Komlosh, M. E., Magn. Reson. Chem., 40, S15 (2002) [5] M. A. Koch and J. Finsterbusch, Proc. ISMRM 16, 764 (2008) [3] M. A. Koch and J. Finsterbusch, Magn. Reson. Med. 60, 90 (2008) Fig. 1: Histograms of signal difference between anti-parallel and parallel gradient orientations, (S(q,π)-S(q,0))/S0, in a ...
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Introduction: Pulsed field gradient diffusion sequences with multiple diffusion encoding blocks have recently gained renewed interest in the magnetic resonance community. Some of the properties that appear promising in terms of applications are the ability to measure pore sizes, detect anisotropic pores in macroscopically isotropic media, and the enhancement of diffraction peaks [1-3]. Here we ...
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The pulsed gradient spin-echo nuclear magnetic resonance experiment is a powerful tool for studying the constitution and structure of complex systems (e.g., polydisperse systems and porous media). In applications to polydisperse systems, it is important to consider the effects of obstruction, exchange, entanglement, and diffusional averaging processes whereas in applications to porous samples, ...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2012
ISSN: 0740-3194
DOI: 10.1002/mrm.24515