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Abstract
Image reconstruction for diffusion optical tomography often involves repeatedly solving the forward problem, wherein the diffusion equation is typically utilized to describe the light propagation. However, the diffusion equation may not be valid in regions of either high absorption or low scatter. In this paper, a new method is proposed to improve the forward model. This method is based on the modelling error between the Monte Carlo method and the diffusion equation. To further improve the efficiency of image reconstruction, we propose the grouping strategy of source-detector configuration. Simulation results demonstrate that the proposed method can significantly speed up the reconstruction process with the high reconstruction quality.