Suppression of static magnetic field in diffusion measurements of heterogeneous materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F09%3APU82047" target="_blank" >RIV/00216305:26220/09:PU82047 - isvavai.cz</a>

Alternative codes found

RIV/68081731:_____/09:00336699

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Suppression of static magnetic field in diffusion measurements of heterogeneous materials

Original language description

The paper describes a magnetic resonance (MR) method for establishing the diffusion coefficients in heterogeneous materials. The pulsed field gradient stimulated-echo methods have a reduced coupling between the applied magnetic field gradient and a constant internal magnetic field gradient caused by different susceptibilities throughout the sample. When studying systems where it is necessary to keep the duration of the pulse sequence at a minimum or to study diffusion as a function of observation time,the spin-echo method should be chosen. The basic idea is to acquire the spin echo amplitude with pulsed field gradient of opposite signs and to subtract in a suitable way the NMR signals measured. The measuring method and the digital signal processing enable eliminating the effect of static magnetic field on the accuracy of measuring. The method proposed can be used to measure diffusion-weighted images of liquids found in porous materials, and in the development of new MR tomography meas

Czech name

Potlačení statického magnetického pole při měření difúzí v heterogenních materiálech

Czech description

Popis metody měření difúzních koeficientů v heterogenních materiálech s odstraněním vlivu statického gradientu vyvolaného susceptibilitou zkoumaného materiálu. Základní myšlenka metody je v aplikaci gradientních impulzů opačné polarity.

Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

<a href="/en/project/GA102%2F07%2F0389" target="_blank" >GA102/07/0389: Research into new NMR techniques for studying structure of porous materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

PIERS 2009, Beijing

ISBN

978-1-934142-08-0

ISSN

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e-ISSN

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Number of pages

5

Pages from-to

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Publisher name

The Electromagnetics Academy

Place of publication

USA

Event location

Beijing

Event date

Mar 23, 2009

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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