Figure 9.

Values of fluorescence yield as a function of ICG concentration in a 70 mm liquid phantom recovered using two methods to process the recorded data. One method uses the spectral-fitting technique to decouple background contamination across the fluorescence emission spectrum, while the other simply integrates the measured spectrum, as would be the case for long pass filtering alone. Values were determined using a homogeneous fitting algorithm for the background optical properties as well as the fluorescence yield.