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Proceedings Paper

Sparse signal representation at the service of quantitative optoacoustic tomography
Author(s): Amir Rosenthal; Daniel Razansky; Vasilis Ntziachristos
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Paper Abstract

We report on a new method for extraction of quantified optical absorption maps of scattering and absorbing media using sparse representation, a relatively recent and fast emerging technique in the field of signal processing. The tomographic reconstruction is facilitated by assuming slow spatial variations of illuminating optical field along with relatively sharp changes in optical absorption coefficient. As opposed to previous approaches that utilize photon transport equation in order to correct images for inhomogeneous light distribution within the imaged object, the method herein provides an estimate for photon fluence directly from the recorded optoacoustic signals. In this way a robust quantitative performance is achieved without prior knowledge of illumination geometry and optical properties of the object.

Paper Details

Date Published: 23 February 2010
PDF: 5 pages
Proc. SPIE 7564, Photons Plus Ultrasound: Imaging and Sensing 2010, 75640S (23 February 2010); doi: 10.1117/12.843264
Show Author Affiliations
Amir Rosenthal, Technische Univ. München (Germany)
Helmholtz Zentrum München GmbH (Germany)
Daniel Razansky, Technische Univ. München (Germany)
Helmholtz Zentrum München GmbH (Germany)
Vasilis Ntziachristos, Technische Univ. München (Germany)
Helmholtz Zentrum München GmbH (Germany)


Published in SPIE Proceedings Vol. 7564:
Photons Plus Ultrasound: Imaging and Sensing 2010
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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