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Reconstructed photoacoustic images using the data generated by the in vivo experiment. (a) DAS, (b) DMAS, and (c) DS-DMAS. All images are shown with a dynamic range of 60 dB (for better evaluation). The 1536 frames of the detected photoacoustic signals have a higher SNR. The arrow shows the location of the retina. The background noise of the DS-DMAS is lower than DAS and DMAS (18 dB and 7 dB, respectively).
