Treeby, B;
Lucka, F;
Martin, E;
Cox, BT;
(2018)
Equivalent-Source Acoustic Holography for Projecting Measured Ultrasound Fields Through Complex Media.
IEEE Trans Ultrason Ferroelectr Freq Control
, 65
(10)
pp. 1857-1864.
10.1109/TUFFC.2018.2861895.
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Abstract
Holographic projections of experimental ultrasound measurements generally use the angular spectrum method or Rayleigh integral, where the measured data are imposed as a Dirichlet boundary condition. In contrast, full-wave models, which can account for more complex wave behavior, often use interior mass or velocity sources to introduce acoustic energy into the simulation. Here, a method to generate an equivalent interior source that reproduces the measurement data is proposed based on gradient-based optimization. The equivalent-source can then be used with full-wave models (for example, the open-source k-Wave toolbox) to compute holographic projections through complex media including nonlinearity and heterogeneous material properties. Numerical and experimental results using both time-domain and continuous-wave sources are used to demonstrate the accuracy of the approach.
| Type: | Article |
|---|---|
| Title: | Equivalent-Source Acoustic Holography for Projecting Measured Ultrasound Fields Through Complex Media |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TUFFC.2018.2861895 |
| Publisher version: | https://doi.org/10.1109/TUFFC.2018.2861895 |
| Language: | English |
| Additional information: | © 2018 IEEE. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see (http://creativecommons.org/licenses/by/3.0/) |
| Keywords: | Holography, equivalent-source, full-wave modelling, gradient-based optimisation |
| 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 Computer 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/10054327 |
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