This article [J. Biomed. Opt. 21(8), 088002 (2016)] was originally published online on 23 August 2016 with an error in Figure 2 and the constants $C_{01}$, $C_{02}$, $b_1$, and $b_2$ in Eq. (2). This erratum is published to correct Sec. 2.5 and Fig. 2(a).

Section 2.5 “Measurement of the Photofrin Concentration in Tumors” should read:

The attenuation of Photofrin fluorescence signal due to the light absorption and scattering by tissue was corrected by applying an empirical correction factor (CF)

Fig. 2

(a) Fluorescence single value decomposition (SVD) amplitude for phantom experiments with different optical properties with the same Photofrin concentration.

The paper was corrected online on 23 March 2017.