Photoacoustic microscopy (PAM) is an emerging technique extensively used to study brain activities. However, limited by the size and performance of optical/acoustic scanners, existing ORPAMs are still bulky, heavy, and suffer from low imaging quality/speed. Here, we develop a wearable ORPAM probe featuring small, light, fast, and cellular imaging capability. To evaluate the probe, we monitored the cerebral vascular network within two hours and demonstrated that the microscope was stable enough to study long-term brain hemodynamics in a freely moving rat.
|