Image reconstruction using wavelet multi-resolution technique for time-domain diffuse optical tomography

Fang Yang; Feng Gao; Yuting Jiao; Huijuan Zhao

doi:10.1117/12.840360

12 February 2010 Image reconstruction using wavelet multi-resolution technique for time-domain diffuse optical tomography

Fang Yang, Feng Gao, Yuting Jiao, Huijuan Zhao

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Proceedings Volume 7557, Multimodal Biomedical Imaging V; 755703 (2010) https://doi.org/10.1117/12.840360
Event: SPIE BiOS, 2010, San Francisco, California, United States

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.

Citation Download Citation

Fang Yang, Feng Gao, Yuting Jiao, and Huijuan Zhao "Image reconstruction using wavelet multi-resolution technique for time-domain diffuse optical tomography", Proc. SPIE 7557, Multimodal Biomedical Imaging V, 755703 (12 February 2010); https://doi.org/10.1117/12.840360

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KEYWORDS

Wavelets

Reconstruction algorithms

Optical properties

Inverse problems

Diffuse optical tomography

Signal to noise ratio

Absorption

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