Figure 3

Mean fluorescence signal intensities subtracted from the background signal intensity (a, b) and corresponding quantitative data (c, d) of mean fluorescence signal intensities, standard deviation (SD) and the relative fluorescence signal enhancement (ΔSI%) of the paravertebral soft tissue in the area of previous surgery of the experimental group compared to the controls as measured before and continuously 1–25 min after injection of 1 mg/kg (a, c) and 10 mg/kg (b, d) ICG.