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Proceedings Article

Optoacoustic tomography using a two-dimensional optical pressure transducer and two different reconstruction algorithms

[+] Author Affiliations
Daniel Frauchiger, Martin Frenz, Heinz P. Weber

Univ. of Bern (Switzerland)

Kornel P. Koestli

Univ. of Bern (United Kingdom)

Guenther Paltauf

Karl-Franzens Univ. Graz (Austria)

Proc. SPIE 4434, Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications, 74 (October 24, 2001); doi:10.1117/12.446660
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From Conference Volume 4434

  • Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications
  • Albert-Claude Boccara; Alexander A. Oraevsky
  • Munich, Germany | June 17, 2001

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.

© (2001) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Daniel Frauchiger ; Kornel P. Koestli ; Guenther Paltauf ; Martin Frenz and Heinz P. Weber
"Optoacoustic tomography using a two-dimensional optical pressure transducer and two different reconstruction algorithms", Proc. SPIE 4434, Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications, 74 (October 24, 2001); doi:10.1117/12.446660; http://dx.doi.org/10.1117/12.446660


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