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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: IEEE Trans Med Imaging. 2020 Sep 28;PP:10.1109/TMI.2020.3027199. doi: 10.1109/TMI.2020.3027199

Fig. 8.

Fig. 8

PA signal attenuation on ex vivo tissue phantoms. (a) PA images of the blood tube (shown in color) overlaid with B-mode ultrasound images (shown in gray), with different thickness of pig belly tissue (P) and chicken tissue (C). (b) Overlaid PA and ultrasound images with 60 mm chicken tissue only (left), or 35 mm pig belly skin tissue on top of 25 mm chicken tissue (right). (c) Measured (red dotted line) SNR of the PA signals of the blood tube as a function of the thicknesses of overlaying tissue. A linear fitting (black solid line) quantified the SNR decay coefficient.