Fig. 10.

Effect of first-layer μ_a mismatch between the reference site and the target site on the reconstructed image. First-layer optical properties at the target and reference sites are (a) μ_{a1_tar}=0.023, μ_{a1_ref}=0.023; (b) μ_{a1_tar}=0.04, μ_{a1_ref}=0.023; (c) μ_{a1_tar}=0.04, μ_{a1_ref}=0.04; and (d) μ_{a1_tar} =0.023, μ_{a1_ref}=0.04. The other background optical properties of both the reference and target sites are ${\mu }_{s1}^{\prime }=7.5$, μ_a2=0.08, and ${\mu }_{s2}^{\prime }=6.5{\mathrm{cm}}^{-1}$. The optical properties of the target are μ_a=0.23 and ${\mu }_s^{\prime }=5.45{\mathrm{cm}}^{-1}$.