Work

Motion of a solid sphere in a viscoelastic medium in response to applied acoustic radiation force: Theoretical analysis and experimental verification

Year: 2007

Type: article

Abstract: The motion of a rigid sphere in a viscoelastic medium in response to an acoustic radiation force of short duration was investigated. Theoretical and numerical studies were carried out first. To verify the developed model, experiments were performed using rigid spheres of various diameters and densities embedded into tissue-like, gel-based phantoms of varying mechanical properties. A 1.5 MHz, single-element, focused transducer was used to apply the desired radiation force. Another single-element, focused transducer operating at 25 MHz was used to track the displacements of the sphere. The results of this study demonstrate good agreement between theoretical predictions and experimental measurements. The developed theoretical model accurately describes the displacement of the solid spheres in a viscoelastic medium in response to the acoustic radiation force.

Source: The Journal of the Acoustical Society of America

DOI: 10.1121/1.2774754

Authors: Salavat R. Aglyamov, Andrei B. Karpiouk, Yurii A. Ilinskii, Evgenia A. Zabolotskaya, Stanislav Y. Emelianov

Institutions: Russian Academy of Sciences, Institute of Mathematical Problems of Biology, The University of Texas at Austin, Applied Research Laboratories, The University of Texas at Austin

Language: English

Topic: Ultrasound and Hyperthermia Applications

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: National Institutes of Health, National Eye Institute, National Cancer Institute

Awards: Elasticity Imaging and Sensing using Gas Bubble Dynamics, G321127578, A Shear Modulus Imager, G97281639