**6. Conclusion**

The solution to diffuse light transport through tissues is provided by iterative nonlinear reconstruction of diffuse optical tomography using a finite element forward model. The efficiency of the forward solver has a significant impact on reconstruction performance and reconstruction time, which is critical in making optical tomography a viable imaging modality in clinical diagnosis. Standard regularization (Levenburg-Marquadt) with a small anisotropy factor identifies the scattering coefficient better than sparsity regularization in the inverse model. Sparsity regularization (Split Bregman) localizes the inclusion position and has high anisotropy factor g while
