Artificial intelligence based real-time microcirculation analysis system for laparoscopic colorectal surgery

Figure 3 Risk color map result of artificial intelligence based real-time analysis microperfusion on the indocyanine green video. A: Indocyanine green (ICG) fluorescence image and ICG curve graph at each position. F_max is the amount of change in ICG fluorescence intensity. T_max is the time it takes for the ICG fluorescence intensity change to become F_max, T_1/2max is the time it takes for the ICG fluorescence intensity change to become F_max/2. Rising slope represents F_max/T_max. TR represents T_1/2max/T_max; B: Risk color map result of artificial intelligence method. Red region means risk-safe, green region means risk-intermediate, and blue region means risk-dangerous. TR: Time ratio; RS: Rising slope; ICG: Indocyanine green; AI: Artificial intelligence.