FGS is a fast evolving branch of Minimal Invasive Surgery where fluorescent molecules such as ICG are injected in patient with or without marker. The fluorescence emitted by these molecules is detected by a camera to provide additional information about pathology.
One of the most commonly used molecule is ICG. These molecules absorb photons at wavelength below 800nm and emit fluorescence at higher wavelengths. The fluorescence emitted can be detected by specially designed vision systems. ICG fluorescence can be useful in getting information about blood perfusion, visualise anatomical structures in gallbladder surgery and sentinel lymph nodes.