Martin, E;
Roberts, M;
Treeby, B;
(2021)
Measurement and simulation of steered acoustic fields generated by a multielement array for therapeutic ultrasound.
JASA Express Letters
, 1
(1)
, Article 012001. 10.1121/10.0003210.
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Abstract
Modelling of fields generated by therapeutic ultrasound arrays can be prone to errors arising from differences from nominal transducer parameters, and variations in relative outputs of array elements when driven under different conditions, especially when simulating steered fields. Here, the effect of element size, element positions, relative source pressure variations, and electrical crosstalk on the accuracy of modelling pressure fields generated by a 555 kHz 32-element ultrasonic array were investigated. For this transducer, errors in pressure amplitude and focal position were respectively reduced from 20% to 4% and 3.3 mm to 1.5 mm using crosstalk prediction, and experimentally determined positions.
| Type: | Article |
|---|---|
| Title: | Measurement and simulation of steered acoustic fields generated by a multielement array for therapeutic ultrasound |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1121/10.0003210 |
| Publisher version: | https://doi.org/10.1121/10.0003210 |
| Language: | English |
| Additional information: | All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | MATLAB, Acoustic therapy, Surface waves, Vector fields, Acoustical properties, Acoustic field, 3D printing, Transducers, Fourier analysis, Hydrophone |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10119822 |
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