Javaherian, A;
Cox, BT;
(2021)
Ray-based inversion accounting for scattering for biomedical ultrasound computed tomography.
Inverse Problems
, 37
, Article 115003. 10.1088/1361-6420/ac28ed.
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Abstract
An efficient and accurate image reconstruction algorithm for ultrasound tomography in soft tissue is described and demonstrated, which can recover accurate sound speed distribution from acoustic time series measurements. The approach is based on a second-order iterative minimisation of the difference between the measurements and a model based on a ray-approximation to the heterogeneous Green's function. It overcomes the computational burden of full-wave solvers while avoiding the drawbacks of time-of-flight methods. Through the use of a second-order iterative minimisation scheme, applied stepwise from low to high frequencies, the effects of scattering are incorporated into the inversion.
| Type: | Article |
|---|---|
| Title: | Ray-based inversion accounting for scattering for biomedical ultrasound computed tomography |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1361-6420/ac28ed |
| Publisher version: | https://doi.org/10.1088/1361-6420/ac28ed |
| Language: | English |
| Additional information: | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| 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/10137183 |
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