Treeby, BE;
Jaros, J;
Rohrbac, D;
Cox, BT;
(2014)
Modelling Elastic Wave Propagation Using the k-Wave MATLAB Toolbox.
In:
2014 IEEE International Ultrasonics Symposium.
(pp. pp. 146-149).
IEEE
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Abstract
A new model for simulating elastic wave propagation using the open-source k-Wave MATLAB Toolbox is described. The model is based on two coupled first-order equations describing the stress and particle velocity within an isotropic medium. For absorbing media, the Kelvin-Voigt model of viscoelasticity is used. The equations are discretised in 2D and 3D using an efficient time-stepping pseudospectral scheme. This uses the Fourier collocation spectral method to compute spatial derivatives and a leapfrog finite-difference scheme to integrate forwards in time. A multi-axial perfectly matched layer (M-PML) is implemented to allow free-field simulations using a finite-sized computational grid. Acceleration using a graphics processing unit (GPU) is supported via the MATLAB Parallel Computing Toolbox. An overview of the simulation functions and their theoretical and numerical foundations is described.
| Type: | Proceedings paper |
|---|---|
| Title: | Modelling Elastic Wave Propagation Using the k-Wave MATLAB Toolbox |
| Event: | IEEE International Ultrasonics Symposium (IUS) |
| Location: | Chicago, IL |
| Dates: | 03 September 2014 - 06 September 2014 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ULTSYM.2014.0037 |
| Publisher version: | https://doi.org/10.1109/ULTSYM.2014.0037 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| 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/10113895 |
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