Fig. 5.

Numerical simulation of light ($\lambda =632.8\mathrm{nm}$) distribution in a tissue phantom with $n_p=1.33$, ${\mu }_a={10}^{-4}{\mathrm{mm}}^{-1}$, ${\mu }_s=0.2{\mathrm{mm}}^{-1}$, formed by the pointed sapphire capillary needles with diameter 1.2 mm; (a) transmitted intensity $\ln I_{\mathrm{T}}$ (b) absorbed intensity $\ln I_{\mathrm{A}}$. The lengths of cone part correspond to 0.6, 2.0, 4.0, 6.0, 8.0, and 10.0 mm (from top to bottom).