Figure 6.

The concept of quantitative fluorescence measurements (Fluorescence‐based Enhanced Reality = FLER) for determining the bowel perfusion. Upper panel: The fluorescence signal is analyzed during 40 s after intravenous administration of ICG. Using specific software (VR‐PERFUSION, IRCAD; France) the slope of the fluorescence time‐to‐peak is computed and converted to color codes, resulting in a virtual perfusion cartography. Lower panel: The white light image is combined with the perfusion cartography, creating an augmented reality view of the bowel perfusion at the resection site