Fig. 9.

(A) In vivo photoacoustic images of blood vessels in the mouse ear (left) with and (right) without water layer on top, Reprinted with permission from [191]. (B) differentiation of blood flow states with the dual-modal system. (left) En-face microvasculature image of OCT angiography, (right) photoacoustic image of mouse pinna, (top) images with blood flow, (down) images with blood flow blocked, Reprinted with permission from [190]. (C) Schematic of the multiport photoacoustic imaging system. Reprinted with permission from [192] (D) Photoacoustic MAP image acquired in-vivo from mouse ear. Reprinted with permission from [192].