Plumb AA, et al. - Experts sought to investigate if Fabry-Perot interferometer-based photoacoustic imaging (PAI) system of the dorsalis pedis (DP) successfully depicted (1) peripheral arteries and (2) microvascular circulatory changes in response to thermal stimuli. Rapid, volumetric, high-resolution imaging was achieved by the PAI of peripheral limb vessels and the microvasculature. This system was responsive to vasomotor changes induced by thermal stimuli.