Bibliographic Details
| Title: |
Phase-insensitive versus phase-sensitive ultrasound absorption tomography in the frequency domain. |
| Authors: |
Kaupinmäki, Santeri1,2 j.kaupinmaki@ucl.ac.uk, Cox, Ben1, Arridge, Simon2 |
| Superior Title: |
Applied Mathematics in Science & Engineering. Dec2023, Vol. 31 Issue 1, p1-20. 20p. |
| Subject Terms: |
*PYROELECTRIC detectors, *PIEZOELECTRIC detectors, *TOMOGRAPHY, *ULTRASONIC imaging, *MATRIX inversion |
| 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 phaseinsensitive detectors can be used advantageously in ultrasound tomography, specifically absorption tomography, when the number of detectors is sparse. We present measurement models for phasesensitive 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. [ABSTRACT FROM AUTHOR] |
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| Database: |
Academic Search Premier |