Skip to main content
. Author manuscript; available in PMC: 2014 Jul 3.
Published in final edited form as: J Phys Chem Lett. 2013 Jun 13;4(13):2177–2185. doi: 10.1021/jz400559a

Figure 4. Phantom study that evaluates the effect of water on PA imaging in the near-infrared region.

Figure 4

(A) PA spectra of PE at different water layer thickness. The inset figure shows the schematic of the constructed phantom. PE: polyethylene. (B) PA amplitude ratio between the first and second overtone excitation as a function of water layer thickness. Adapted from Wang et al., J Biophotonics (2012).