Quantifying viscosity and elasticity using holographic imaging by Rayleigh wave dispersion

Singh, Amandeep and Pati, Falguni and John, Renu (2022) Quantifying viscosity and elasticity using holographic imaging by Rayleigh wave dispersion. Optics Letters, 47 (9). ISSN 0146-9592

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Viscoelasticity is an important diagnostic parameter to investigate physiological dysfunctions in biological tissues. This Letter reports the quantification of viscoelastic parameters by Rayleigh wave tracing on the surface of tissue-mimicking phantoms using holographic imaging. The Rayleigh wave is induced by an electromechanical actuator on the surface of oil-in-gelatin phantoms and a biological tissue sample followed by holographic imaging and reconstruction of the wave. The frequency-dependent velocity dispersion is fitted to a Voigt model for the quantification of viscous and elastic moduli. The viscoelastic parameters calculated by the proposed method are validated by comparing the results from a conventional mechanical rheometer. © 2022 Optica Publishing Group

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IITH Creators:
IITH CreatorsORCiD
Pati, Falgunihttp://orcid.org/0000-0002-3588-1800
John, Renuhttps://orcid.org/0000-0003-3254-2472
Item Type: Article
Additional Information: A.S. acknowledges the University grant commission (UGC-CSIR) for their support of this research.
Uncontrolled Keywords: Elastic Modulus; Elasticity; Elasticity Imaging Techniques; Phantoms, Imaging; Viscosity
Subjects: Biomedical Engineering
Divisions: Department of Biomedical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 28 Jun 2022 05:33
Last Modified: 29 Jun 2022 09:50
URI: http://raiith.iith.ac.in/id/eprint/9418
Publisher URL: http://doi.org/10.1364/OL.451464
OA policy: https://v2.sherpa.ac.uk/id/publication/13362
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