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Proceedings Paper

Optoacoustic tomography using a two-dimensional optical pressure transducer and two different reconstruction algorithms
Author(s): Daniel Frauchiger; Kornel P. Koestli; Guenther Paltauf; Martin Frenz; Heinz P. Weber
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Paper Abstract

Optoacoustic pressure waves were generated by irradiating blood vessels embedded into calf cartilage with 5 ns long pulses from an optical parametric oscillator (OPO). A two dimensional pressure transducer consisting of a glass prism and a liquid layer was used to measure the laser-induced pressure waves. The pressure dependent changes of reflection at the prism-liquid interface were recorded with a time-gated CCD-camera. On the basis of the 2D pressure measurements the spatial distribution of the blood vessels was reconstructed using two different algorithms, one based on radial back projection and one using Fourier transformation. High lateral (100 micrometers ) and depth resolution (20 micrometers ) was achieved.

Paper Details

Date Published: 24 October 2001
PDF: 7 pages
Proc. SPIE 4434, Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications, (24 October 2001); doi: 10.1117/12.446660
Show Author Affiliations
Daniel Frauchiger, Univ. of Bern (Switzerland)
Kornel P. Koestli, Univ. of Bern (United Kingdom)
Guenther Paltauf, Karl-Franzens Univ. Graz (Austria)
Martin Frenz, Univ. of Bern (Switzerland)
Heinz P. Weber, Univ. of Bern (Switzerland)

Published in SPIE Proceedings Vol. 4434:
Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications
Albert-Claude Boccara; Alexander A. Oraevsky, Editor(s)

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