Fig. 5.

(a)–(d) Acquired images of SFI, $\mathrm{\Delta }\mathrm{Hb}$, $\mathrm{\Delta }\mathrm{HbO}$ and $\mathrm{\Delta }{\mathrm{SO}}_2$ at 30, 150, and 300 s. (e)–(h) Time series data of SFI, $\mathrm{\Delta }\mathrm{Hb}$, $\mathrm{\Delta }\mathrm{HbO}$, and $\mathrm{\Delta }{\mathrm{SO}}_2$ in the marked region of interest (ROI).