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Proceedings Paper

Photoacoustic image reconstruction using the pseudoinverse of the system matrix with the potential for real time imaging
Author(s): Adam Petschke; Patrick J. La Rivière
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Paper Abstract

We discuss a method for using the pseudoinverse of the system matrix to perform photoacoustic image reconstruction. In our method, the regularization levels are set and the pseudoinverse matrices are calculated just once for all possible objects, so the reconstruction step consists only of a matrix-vector multiplication, which is very fast. We expect this method to work well in photoacoustic imaging because the dominant noise mechanism is usually transducer thermal noise, which is object independent. We find that this reconstruction method offers improvements in ideal observer signal-to-noise ratio, resolution, and the length of streak artifacts compared to standard filtered backprojection.

Paper Details

Date Published: 23 February 2012
PDF: 6 pages
Proc. SPIE 8223, Photons Plus Ultrasound: Imaging and Sensing 2012, 82233J (23 February 2012); doi: 10.1117/12.909145
Show Author Affiliations
Adam Petschke, The Univ. of Chicago Medical Ctr. (United States)
Patrick J. La Rivière, The Univ. of Chicago Medical Ctr. (United States)


Published in SPIE Proceedings Vol. 8223:
Photons Plus Ultrasound: Imaging and Sensing 2012
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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