Photoacoustic image reconstruction from full field data in heterogeneous media

Markus Haltmeier; Gerhard Zangerl; Linh V. Nguyen; Robert Nuster

doi:10.1117/12.2508541

27 February 2019 Photoacoustic image reconstruction from full field data in heterogeneous media

Markus Haltmeier, Gerhard Zangerl, Linh V. Nguyen, Robert Nuster

Author Affiliations +

Proceedings Volume 10878, Photons Plus Ultrasound: Imaging and Sensing 2019; 108783D (2019) https://doi.org/10.1117/12.2508541
Event: SPIE BiOS, 2019, San Francisco, California, United States

Abstract

We consider image reconstruction in full-field photoacoustic tomography, where 2D projections of the full 3D acoustic pressure distribution at a given time T < 0 are collected. We discuss existing results on the stability and uniqueness of the resulting image reconstruction problem and review existing reconstruction algorithms. Open challenges are also mentioned. Additionally, we introduce novel one-step reconstruction methods allowing for a variable speed of sound. We apply preconditioned iterative and variational regularization methods to the onestep formulation. Numerical results using the one-step formulation are presented, together with a comparison with the previous two-step approach for full-field photoacoustic tomography.

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Markus Haltmeier, Gerhard Zangerl, Linh V. Nguyen, and Robert Nuster "Photoacoustic image reconstruction from full field data in heterogeneous media", Proc. SPIE 10878, Photons Plus Ultrasound: Imaging and Sensing 2019, 108783D (27 February 2019); https://doi.org/10.1117/12.2508541

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KEYWORDS

Image restoration

Radon transform

Acquisition tracking and pointing

Reconstruction algorithms

Photoacoustic tomography

Acoustics

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