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Viscoelastic property detection by elastic displacement NMR measurements

✍ Scribed by Czeslaw J. Lewa; Jacques D. De Certaines

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
505 KB
Volume
6
Category
Article
ISSN
1053-1807

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✦ Synopsis

Abstract

An attempt was undertaken to analyze the phase changes in the transverse magnetization component, M~[perp]~, determined in NMR response by an elastic wave in the presence of two pulses with opposite magnetic field gradient directions. The obtained theoretical results indicate that such changes are significant in biologic tissues. Their measurement by NMR opens up new possibilities for detecting the displacement and some viscoelastic properties such as the adiabatic compressibility coefficient, amplitude wave damping coefficient, frequency and dispersion strength of elastic relaxation processes, etc. The method may be useful in basic applied research and in medical diagnosis of some diseases resulting in the variation of elastic properties of biological tissues, eg, atherosclerosis.

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