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Proceedings Paper

Image reconstruction using wavelet multi-resolution technique for time-domain diffuse optical tomography
Author(s): Fang Yang; Feng Gao; Yuting Jiao; Huijuan Zhao
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Paper Abstract

It is generally believed that the inverse problem in diffuse optical tomography (DOT) is highly ill-posed and its solution is always under-determined and sensitive to noise, which is the main problem in the application of DOT. In this paper, we propose a method on image reconstruction for time-domain diffuse optical tomography based on panel detection and Finite-Difference Method, and introduce an approach to reduce the number of unknown parameters in the reconstruction process. We propose a multi-level scheme to reduce the number of unknowns by parameterizing the spatial distribution of optical properties via wavelet transform and then reconstruct the coefficients of this transform. Compared with previous traditional uni-level full spatial domain algorithm, this method can efficiently improve the reconstruction quality. Numerical simulations show that wavelet-based multi-level inversion is superior to the uni-level algebraic reconstruction technique.

Paper Details

Date Published: 13 February 2010
PDF: 8 pages
Proc. SPIE 7557, Multimodal Biomedical Imaging V, 755703 (13 February 2010); doi: 10.1117/12.840360
Show Author Affiliations
Fang Yang, Tianjin Univ. (China)
Feng Gao, Tianjin Univ. (China)
Yuting Jiao, Tianjin Univ. (China)
Huijuan Zhao, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7557:
Multimodal Biomedical Imaging V
Fred S. Azar; Xavier Intes, Editor(s)

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