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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Neuroimage. 2012 Aug 24;64:257–266. doi: 10.1016/j.neuroimage.2012.08.054

Figure 2.

Figure 2

Photoacoustic and fluorescence imaging systems. (a) Schematic of the PACT system. (b) In PACT, upon laser excitation, the time-domain PA signals recorded by each transducer element are back-projected into the 2D imaging space based on the delay times, and then summed to form an image of the mouse cortex. (c) Schematic of the OR-PAM system, where the capillary-level lateral resolution is provided by the tight optical focusing. UT, ultrasonic transducer; CorL, correction lens; RAP, right-angled prism; RhP, rhomboid prism; SOL, silicone oil layer. (d) Schematic of the fluorescence imaging system.