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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: J Imaging. 2018 Dec 12;4(12):149. doi: 10.3390/jimaging4120149

Figure 2.

Figure 2.

Photoacoustic (PA) imaging system and application in the medical field: (a) Linear-array photoacoustic tomography (PAT) of methylene blue concentration in a rat sentinel lymph node (SLN), (b) circular array PAT of cerebral hemodynamic changes in a rat, and (c) photoacoustic endoscopy (PAE) of a rabbit esophagus. UST: ultrasound transducer. (d) Optical resolution photoacoustic microscopy (OR-PAM) used for quantification of oxygen saturation in a mouse ear. (e) Acoustic resolution photoacoustic microscopy (AR-PAM) of normalized total hemoglobin concentration in a human palm [16]. Adapted with permission from ref. [16].