Fig. 2.

Reconstructed absorpstion map of the high contrast phantom target (${\mu }_{\mathrm{a}}=0.23{\mathrm{cm}}^{-1}$ and ${\mu }_{\mathrm{s}}^{\prime }=5.5{\mathrm{cm}}^{-1}$) at 780 nm at the 2.5-cm target depth. The maps at rest of the depths were not shown. (a) Reconstruction result of US-guided dual-zone mesh method. (b) Reconstruction result of NIRFAST with no prior using different $\lambda$. (c) NIRFAST with US prior. (d) Coregistered US B-scan image.