Premium
Viscoelastic property detection by elastic displacement NMR measurements
Author(s) -
Lewa Czeslaw J.,
De Certaines Jacques D.
Publication year - 1996
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880060414
Subject(s) - viscoelasticity , materials science , dispersion (optics) , displacement (psychology) , compressibility , nuclear magnetic resonance , relaxation (psychology) , amplitude , phase (matter) , adiabatic process , magnetization , mechanics , magnetic field , physics , thermodynamics , composite material , optics , medicine , psychology , quantum mechanics , psychotherapist
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.