Time-reversal acoustic focusing with liquid resonator for medical applications

Yegor D. Sinelnikov, Alexandre Y. Sutin, Armen P. Sarvazyan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Time Reversal Acoustic (TRA) focusing system based on the use of liquid filled resonators with single or few transducers is demonstrated to effectively converge acoustic energy in space and time. Because the wavelength in liquid is typically smaller than in solids, liquid based TRA focusing resonators can have smaller dimensions than solid resonators. The efficiency of liquid-based TRA focusing resonators to transmit acoustic power to soft tissues is improved by impedance matching of the acoustic transducer assembly to the surrounding liquid. Experiments were conducted to understand the properties of TRA focusing with the liquid-filled resonators and possible application of the TRA systems for biomedical applications. The factors defining the efficiency of liquid based TRA focusing resonators were explored. In media with high attenuation, the binary mode of ultrasound delivery yielded noticeably narrower focusing of ultrasound than conventional analog focusing.

Original languageEnglish
Title of host publication6th International Symposium on Therapeutic Ultrasound
Pages82-86
Number of pages5
DOIs
StatePublished - 2007
Event6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND - Oxford, United Kingdom
Duration: 30 Aug 20072 Sep 2007

Publication series

NameAIP Conference Proceedings
Volume911
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND
Country/TerritoryUnited Kingdom
CityOxford
Period30/08/072/09/07

Keywords

  • Attenuation
  • Binary
  • Resonator
  • Time reversal
  • Ultrasound

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