Research Article

Paired-Agent Fluorescence Molecular Imaging of Sentinel Lymph Nodes Using Indocyanine Green as a Control Agent for Antibody-Based Targeted Agents

Figure 6

Fluorescence intensity of ICG as a function of albumin concentration with various ICG concentrations. Higher concentrations of ICG required higher concentration of albumin to reach a maximum fluorescence intensity (a). ICG fluorescence plateaued at 50 μM albumin with 1 μM ICG suggesting that it reached its maximum with all ICG bound to albumin in a ratio of 50 : 1 (albumin : ICG) (b).
(a)
(b)