Fig. 4

The effect of SOCS on the skull in vitro and in vivo [61]. a-c Typical reflected images of the USAF target without and with the skull, and with SOCS-treated skull, respectively. Typical reflection images of cortical blood vessels obtained from untreated skull d and from the transparent skull after SOCS treatment for 25 mins e. Photoacoustic images obtained from intact skull f and from the transparent skull after SOCS treatment for 25 mins g