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- W2912184115 abstract "In brain functional diffuse optical tomography, conventional indirect approaches first separately reconstruct the spatial changes in the absorption coefficients at every time point and then calculate the spatial excited levels in terms of hemodynamic models. Direct approaches combine the two steps necessary in the indirect approaches and obtain the spatial excited levels directly. Although reconstruction quality has been improved by the direct approaches to some extent, they still lack sharp edges and suffer from low spatial resolution because of the ill-posedness of the inverse problems. In this paper, a priori sparsity is introduced to obtain the sparse solutions and further improve reconstruction quality. Simulation experiments are conducted to illustrate the expected performance improvements of the proposed approaches." @default.
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- W2912184115 date "2019-01-25" @default.
- W2912184115 modified "2023-10-15" @default.
- W2912184115 title "Sparsity-regularized approaches to directly reconstructing hemodynamic response in brain functional diffuse optical tomography" @default.
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- W2912184115 doi "https://doi.org/10.1364/ao.58.000863" @default.
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