Parallelized interrogation of a Fabry-Perot ultrasound sensor using compressed sensing for fast photoacoustic tomography

Thomas J. Allen; Edward Zhang; Paul C. Beard

doi:10.1117/12.3008990

13 March 2024 Parallelized interrogation of a Fabry-Perot ultrasound sensor using compressed sensing for fast photoacoustic tomography

Thomas J. Allen, Edward Zhang, Paul C. Beard

Author Affiliations +

Proceedings Volume PC12842, Photons Plus Ultrasound: Imaging and Sensing 2024; PC128420A (2024) https://doi.org/10.1117/12.3008990
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

The Fabry-Perot (FP) sensor is typically read out by scanning a focused laser beam over the sensor surface and measuring the reflected light. However, the acquisition time can be relatively long when a large number of spatial sampling points are required. An alternative approach is to use widefield illumination and measure the reflected light using a camera. This approach has enabled the acquisition of 3D photoacoustic images composed of 327,000 spatial sampling points in a couple of seconds or less. In this study, we investigate the possibility of further improving imaging speed by combining the widefield illumination approach with the principles of compressed sensing. Preliminary results suggest that current imaging times could be reduced by at least a factor of 4, enabling the acquisition of 3D photoacoustic images in sub-second timeframes.

Conference Presentation

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Thomas J. Allen, Edward Zhang, and Paul C. Beard "Parallelized interrogation of a Fabry-Perot ultrasound sensor using compressed sensing for fast photoacoustic tomography", Proc. SPIE PC12842, Photons Plus Ultrasound: Imaging and Sensing 2024, PC128420A (13 March 2024); https://doi.org/10.1117/12.3008990

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KEYWORDS

Compressed sensing

Fabry–Perot interferometers

Photoacoustic tomography

Sensors

Ultrasonography

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