Figure 5. Hybrid systems combining PAT with other imaging modalities.
(A) Experimental setup of a photoacoustic imaging system combined with a clinical ultrasound (US) imaging system (iU22; Philips Healthcare). A fiber bundle is attached to the US probe for light delivery. The imaging plane of the US probe is coaxially aligned with the rectangular optical beam on the targeted area. (B) Schematic diagram of the combined photoacoustic and optical-coherence microscope. SLD, superluminescent diode. Solid lines represent single-mode optical fibers. Arrowhead solid lines show data flow. Arrowhead dashed lines show the flow of system control signals. Reproduced with permission from Refs. (38,39).