Fig. 1. Schematic of spectral OCT angiography system

Fig. 2. Lateral resolution measurement with knife edge method

Fig. 3. Dispersion compensation for axial resolution maintaining

Fig. 4. High-resolution imaging results by spectral OCT angiography system. (a) Image of two-dimensional structure by OCT; (b) image of flow signal by OCT with ① and ② indicating dural blood vessels and large blood vessels on cerebral cortex, respectively; (c) X-Y projection display of OCT vascular image; (d) three-dimensional display of OCT vascular images; (e) cerebral dural vascular image; (f) cerebral cortical vascular image

Fig. 5. Whole cerebral vascular image with rat brain photograph shown in upper-left corner