“…PAM can provide a resolution of micron-scale level with a penetration depth of up to one millimeter (optical-resolution PAM, OR-PAM), [1][2][3][4][5][6][7][8] or a resolution of a few tens or hundreds of microns with a penetration depth of a few millimeters (acoustic-resolution PAM, AR-PAM). [9][10][11][12][13][14] Moreover, PAM has rich optical absorption contrasts and good bio-safety. These merits promise PAM great potentials in biomedical imaging such as in vivo brain monitoring, 9,[15][16][17] cancer detection, 18,19) microvasculature visualization, 5,20) endometriosis imaging, 21) cell imaging, 22,23) oxygen saturation measurement, 2,9,24) and so on.…”