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Ultrasound and matter: physical interactions

Ultrasound and matter: physical interactions
Ultrasound and matter: physical interactions
The basic physical characteristics of ultrasound waves are reviewed in terms of the typical displacements, velocities, accelerations and pressures generated in various fluid media as a function of frequency. The effects on wave propagation of interfaces are considered, and the way in which waves are reflected, transmitted and mode converted at interfaces introduced. Then the nonlinear propagation of high amplitude ultrasound is explained, and its consequences, including the generation of harmonic frequencies and enhanced attenuation, considered. The absorption of ultrasonic waves and the resulting heat deposition in absorbing media are described together with factors determining the resulting temperature rises obtained. In the case of tissue these include conduction and perfusion. The characteristics of cavitation in fluid media are also briefly covered. Finally, secondary nonlinear physical effects are described. These include radiation forces on interfaces and streaming in fluids.
ultrasound, heating, streaming, radiation force, nonlinear propagation, cavitation
0079-6107
195-211
Humphrey, Victor F.
23c9bd0c-7870-428f-b0dd-5ff158d22590
Humphrey, Victor F.
23c9bd0c-7870-428f-b0dd-5ff158d22590

Humphrey, Victor F. (2007) Ultrasound and matter: physical interactions. Progress in Biophysics and Molecular Biology, 93 (1-3), 195-211. (doi:10.1016/j.pbiomolbio.2006.07.024).

Record type: Article

Abstract

The basic physical characteristics of ultrasound waves are reviewed in terms of the typical displacements, velocities, accelerations and pressures generated in various fluid media as a function of frequency. The effects on wave propagation of interfaces are considered, and the way in which waves are reflected, transmitted and mode converted at interfaces introduced. Then the nonlinear propagation of high amplitude ultrasound is explained, and its consequences, including the generation of harmonic frequencies and enhanced attenuation, considered. The absorption of ultrasonic waves and the resulting heat deposition in absorbing media are described together with factors determining the resulting temperature rises obtained. In the case of tissue these include conduction and perfusion. The characteristics of cavitation in fluid media are also briefly covered. Finally, secondary nonlinear physical effects are described. These include radiation forces on interfaces and streaming in fluids.

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More information

Published date: 2007
Keywords: ultrasound, heating, streaming, radiation force, nonlinear propagation, cavitation

Identifiers

Local EPrints ID: 43402
URI: http://eprints.soton.ac.uk/id/eprint/43402
ISSN: 0079-6107
PURE UUID: 25123ea1-c072-48b5-a502-261529ade30b
ORCID for Victor F. Humphrey: ORCID iD orcid.org/0000-0002-3580-5373

Catalogue record

Date deposited: 24 Jan 2007
Last modified: 16 Mar 2024 03:34

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