Kaupinmäki, Santeri;
Cox, Ben;
Arridge, Simon;
(2023)
Phase-insensitive versus phase-sensitive ultrasound absorption tomography in the frequency domain.
Applied Mathematics in Science and Engineering
, 31
(1)
, Article 2252571. 10.1080/27690911.2023.2252571.
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Abstract
The sensitivity of phase-sensitive detectors, such as piezoelectric detectors, becomes increasingly directional as the detector element size increases. In contrast, pyroelectric sensors, which are phase-insensitive, retain their omni-directionality even for large element sizes, although they have significantly poorer temporal resolution. This study uses numerical models to examine whether phase-insensitive detectors can be used advantageously in ultrasound tomography, specifically absorption tomography, when the number of detectors is sparse. We present measurement models for phase-sensitive and phase-insensitive sensors and compare the quality of the absorption reconstructions between these sensor types based on relative error and image contrast metrics. We perform the inversion using synthetic data with a Jacobian-based linearized matrix inversion approach.
| Type: | Article |
|---|---|
| Title: | Phase-insensitive versus phase-sensitive ultrasound absorption tomography in the frequency domain |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1080/27690911.2023.2252571 |
| Publisher version: | https://doi.org/10.1080/27690911.2023.2252571 |
| Language: | English |
| Additional information: | © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent. |
| Keywords: | Inverse problems; linear inversion; ultrasound tomography; frequency domain ultrasound tomography; acoustic absorption; helmholtz equation |
| 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 |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10177606 |
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