Fig. 7.

Expected versus calculated effective attenuation coefficients (${\mu }_{\mathrm{eff}}$) for tissue optical phantoms experimentally measured with the bare fiber bundle and obliquely incident fiber setup. Measurements of phantoms with mean free paths $({\mathrm{mfp}}^{\prime })<0.8\mathrm{mm}$ are marked with diamonds, while measurements for those with an ${\mathrm{mfp}}^{\prime }<0.8\mathrm{mm}$ are marked by squares.