Fig. 1. Wide field fiber-based photoacoustic functional microscopy imaging system

Fig. 2. Wide field fiber-based photoacoustic functional microscopy imaging scanning system and scanning and splicing methods

Fig. 3. Fiber-optic ultrasound sensor and its demodulation module， measurement and characterization of the ultrasound detection field

Fig. 4. Dual-wavelength excitation light path and measurement principle of blood oxygen saturation

Fig. 5. Functional imaging results of whole cerebral cortex in two mice under two anesthetic conditions

Fig. 6. Changes of blood vessel distribution and blood oxygen in small intestine model of anaphylactic shock in rats