Phase calibration of ultrasonic receivers using cavitation

Miklós Gyöngy, James R.T. Collin, Balázs Rózsa

Research output: Conference contribution

Abstract

Although there are many techniques for performing phase calibration on ultrasound transducers, most of these suffer from high cost, complexity, or inaccuracy. In the present work, phase calibration on receive was achieved by the generation of inertial cavitation emissions in 3% agar gel using a 1 MHz HIFU transducer, the inertial cavitation emissions providing impulse-like sources for the transducer under calibration. Phase calibration was performed on a custom-built 5-15 MHz transducer, where the results showed good agreement with predictions obtained using the KLM transducer model (<5° difference for 3.0-10.5 MHz, where SNR was above 54 dB and the harmonics of the HIFU excitation cause limited interference). Phase calibration was also performed on an element of a commercial 5-10 MHz linear array. In this instance, a KLM model was not available, so the array element response was modeled as a pole-zero resonator. The slope of phase with log-frequency that was thus obtained was consistent with the bandwidth of the array element response. The results demonstrate the potential of cavitation-based phase calibration on receive to offer higher accuracies than existing phase calibration methods. Future work will investigate the use of laser cavitation in water to minimize attenuation and make the method applicable at higher (>10 MHz) frequencies, as well as remove lowerfrequency (<3 MHz) interference arising from the use of acoustic excitation to generate cavitation.

Original languageEnglish
Title of host publicationInternational Congress on Ultrasonics, Gdansk 2011
Pages295-298
Number of pages4
DOIs
Publication statusPublished - jún. 21 2012
EventInternational Congress on Ultrasonics, ICU 2011 - Gdansk, Poland
Duration: szept. 5 2011szept. 8 2011

Publication series

NameAIP Conference Proceedings
Volume1433
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Congress on Ultrasonics, ICU 2011
CountryPoland
CityGdansk
Period9/5/119/8/11

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Gyöngy, M., Collin, J. R. T., & Rózsa, B. (2012). Phase calibration of ultrasonic receivers using cavitation. In International Congress on Ultrasonics, Gdansk 2011 (pp. 295-298). (AIP Conference Proceedings; Vol. 1433). https://doi.org/10.1063/1.3703192