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(A) Phantom study of AuNR-dPGS as optoacoustic imaging contrast agents. Optoacoustic signal (OAS) and light absorbance (Abs) comparison of gold nanorods functionalized with either PEG or dPGS. (B) Wavelength-dependent influence of the concentration of AuNR-dPGS on the optoacoustic signal shape at different optical densities. (C) Intensity of the optoacoustic signal relative to the concentration of the AuNR-dPGS sample.
