  Photoacoustic imaging is a promising imaging technique for human brain due to
its high sensitivity and functional imaging ability. However, the skull would
cause strong attenuation and distortion to the photoacoustic signals, which
makes non-invasive transcranial imaging difficult. In this work, the temporal
bone is selected as an imaging window to minimize the influence of the skull.
Moreover, non-line-of-sight photoacoustic imaging is introduced to enhance the
field of view, where the skull is considered as a reflector. Simulation studies
are carried out to show that the image quality can be improved with reflected
signal considered.
