Fig. 4.

Spatially resolved absorption sensitivity distributions are displayed on a ${\mathrm{Log}}_{10}$ scale for ${\rho }_{\mathrm{sds}}={\ell }^{\star }$ and $\alpha =0\mathrm{deg}$ for highly scattering media ${\mu }_s^{\prime }/{\mu }_a=100$ (a–c) and moderately scattering media ${\mu }_s^{\prime }/{\mu }_a=1$ (d–f). Distributions are displayed for the $x\text{-}z$ plane at $y=0$ (a, b, d, and e) for cFAMC (a, d) and the conventional approach (b, e). The corresponding depth-dependent cumulative absorption sensitivity is plotted for both approaches (c, f).