Figure 5.

Simulated data for the phosphorescence kinetics in tumors for illumination intensities of (a) 66 mW/cm², (b) 6.6 mW/cm² and (c) 0.66 mW/cm² based on the simulation parameters mentioned in the text and Table 1. Graphs show the calculated luminescence signals for the first 60 µs after excitation pulse, the arbitrary units used here will scale with illumination intensity. Colors indicate signal contributions according to origin and type: ¹O₂ in blood (black), ¹O₂ in vessel wall (green), ¹O₂ in surrounding tissue (red) and total PS phosphorescence (grey).