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. Author manuscript; available in PMC: 2013 Apr 14.
Published in final edited form as: Opt Lett. 2012 Mar 1;37(5):981–983. doi: 10.1364/ol.37.000981

Fig. 2.

Fig. 2

(Color online) Fourier transform of phase difference of M-scan spectral interferogram taken with ICG-encapsulated PLGA nanoparticles (7.5 mg/ml) at a particular depth inside the embedded tissue phantom with a modulation frequency of 1 KHz. (b) Optical path length change detected with PT-OCT for samples with five increasing concentrations (0 mg/ml, 2.5 mg/ml, 5 mg/ml, 7.5 mg/ml, and 10 mg/ml).