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Proceedings Paper

Reconstruction techniques for optoacoustic imaging
Author(s): Martin Frenz; Kornel P. Koestli; Guenther Paltauf; Heinz Schmidt-Kloiber; Heinz P. Weber
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Paper Abstract

Optoacoustics is a method to gain information from inside a tissue. This is done by irradiating a tissue with a short light pulse, which generates a pressure distribution inside the tissue that mirrors the absorber distribution. The pressure distribution measured on the tissue-surface allows, by applying a back-projection method, to calculate a tomography image of the absorber distribution. This study presents a novel computational algorithm based on Fourier transform, which, at least in principle, yields an exact 3D reconstruction of the distribution of absorbed energy density inside turbid media. The reconstruction is based on 2D pressure distributions captured outside at different times. The FFT reconstruction algorithm is first tested in the back projection of simulated pressure transients of small model absorbers, and finally applied to reconstruct the distribution of artificial blood vessels in three dimensions.

Paper Details

Date Published: 15 June 2001
PDF: 8 pages
Proc. SPIE 4256, Biomedical Optoacoustics II, (15 June 2001); doi: 10.1117/12.429298
Show Author Affiliations
Martin Frenz, Univ. of Bern (Switzerland)
Kornel P. Koestli, Univ. of Bern (United Kingdom)
Guenther Paltauf, Karl-Franzens-Univ. Graz (Austria)
Heinz Schmidt-Kloiber, Karl-Franzens-Univ. Graz (Austria)
Heinz P. Weber, Univ. of Bern (Switzerland)

Published in SPIE Proceedings Vol. 4256:
Biomedical Optoacoustics II
Alexander A. Oraevsky, Editor(s)

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