PMID: 16615575Apr 18, 2006Paper

Sol-gel transition in agar-gelatin mixtures studied with transient elastography

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Jean-Luc Gennisson, Guy Cloutier

Abstract

Using the shear wave propagation in solids, the transient elastography technique has been developed to assess the elastic properties of soft tissues. Here, a new approach of transient elastography allows assessing the viscoelastic properties of soft tissues. In this paper, the method is used to follow-up the sol-gel transition of an agar-gelatin mixture noninvasively. The shear wave velocity and shear wave attenuation through the mixture were continuously monitored in the audible range of frequencies (from 50 Hz to 200 Hz). The observed changes in velocities and attenuations as a function of frequency confirmed the validity of the Voigt's model to describe the gel at its stable mechanical state. By a simple inverse problem approach, based on the one-dimensional (1-D) Helmholtz equation, the elasticity and the viscosity of such a mixture were recovered as a function of time. The results obtained are in good agreement with the literature and theoretical predictions. Overall, they demonstrate the high sensitivity of the transient elastography measurements to the rheological parameter changes in agar-gelatin mixtures during gelation.

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Citations

Dec 10, 2008·The Journal of the Acoustical Society of America·Anis Hadj HenniGuy Cloutier
Feb 6, 2008·The Journal of the Acoustical Society of America·J-L GennissonM Fink
Aug 27, 2013·Ultrasound in Medicine & Biology·Miguel BernalMickael Tanter
Jan 30, 2014·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Emmanuel MontagnonGuy Cloutier
Aug 16, 2015·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Abderrahmane OuaredGuy Cloutier
Jun 20, 2012·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Tzu-Yin WangCharles A Cain
May 27, 2014·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Jean-Luc GennissonMickaël Tanter
Oct 19, 2006·Ultrasound in Medicine & Biology·Jean-Luc GennissonGuy Cloutier
Jul 11, 2006·Ultrasound in Medicine & Biology·Marcos Muniz Calor-Filho, João Carlos Machado
Mar 17, 2015·Annals of Biomedical Engineering·M P BrewinS E Greenwald
May 15, 2015·Nature·María Elena Fernández-SánchezEmmanuel Farge
Oct 16, 2016·Ultrasound in Medicine & Biology·Sébastien AubryMathieu Carrié
Nov 2, 2015·The Journal of the Acoustical Society of America·Edwin L Carstensen, Kevin J Parker
Jun 13, 2014·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Claudio VergariWafa Skalli

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