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Proceedings Paper

Compressive sampling in photo-acoustic imaging
Author(s): Jean Provost; Frédéric Lesage
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Paper Abstract

Photo-acoustic (PA) imaging has been developped for different purposes but recent years has seen the technique gain interest with applications to small animal imaging. As a technique it is sensitive to endogenous optical contrast present in tissues and, contrary to diffuse optical imaging, it promises to bring high resolution imaging for in vivo studies at mid-range depths (3mm-10mm). However, a typical acquisition for the reconstruction of one slice in PA tomography can take up to approximatively 30 minutes which is clearly prohibitive for 3D imaging. This paper suggests a new reconstruction strategy using the compressive sampling formalism which states that a small number of linear projection of a compressible image contains enough information for reconstruction. This new scheme allows perfect reconstruction of numerical phantoms with only a fraction of the measurements normally needed with classical methods such as the pseudo-inverse.

Paper Details

Date Published: 8 November 2007
PDF: 7 pages
Proc. SPIE 6796, Photonics North 2007, 67960K (8 November 2007); doi: 10.1117/12.779123
Show Author Affiliations
Jean Provost, École Polytechnique de Montréal (Canada)
Frédéric Lesage, École Polytechnique de Montréal (Canada)

Published in SPIE Proceedings Vol. 6796:
Photonics North 2007

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