Fig. 4.

(a) $T_1$ dependence of the average DOCP values in the tissue area in the DOCP distribution images shown in Fig. 3 with $\lambda$ = (red) 617 nm and (blue) 850 nm. (b) Differences in the DOCP values ($\mathrm{\Delta }\mathrm{DOCP}$) between the two wavelengths. The calculation results for the (c) DOCP and (d) $\mathrm{\Delta }\mathrm{DOCP}$ values in similar configurations, which are extracted from the data shown in Ref. 15.