Diagnostic Accuracy Study of Indocyanine Green for Perfusion Assessment

ICG-NIRF was performed using the Quest Spectrum Platform 2.0. The camera lens was positioned at a fixed distance of 30 cm to the wound bed, at a perpendicular angle, with the gain set at 22.5 decibels (dB) and an exposure time of 50 milliseconds (ms). ICG was dissolved in sterile water at a concentration of 2.5 mg/mL as recommended by the manufacturer (Verdye). 1.5 mg of ICG per liter of circulating blood volume was then administered through manual bolus intravenous injection. Blood volume estimation was based on the patient\'s height and weight.

"ICG-NIRF was performed using the Quest Spectrum Platform 2.0. The camera lens was positioned at a fixed distance of 30 cm to the wound bed, at a perpendicular angle, with the gain set at 22.5 decibels (dB) and an exposure time of 50 milliseconds (ms). ICG was dissolved in sterile water at a concentration of 0.5 or 2.5 mg/mL as recommended by the manufacturer. 1.5 mg of ICG per liter of circulating blood volume was then administered through manual bolus intravenous injection. Blood volume estimation was based on the patients height and weight. Different administration rates (fast: 2s, slow: 15-20s) and a different camera system were tested.~Group 1: Quest Platform 2.0; Fast/Slow; 2.5 mg/mL Group 2: Quest Platform 2.0; Slow/Fast; 2.5 mg/mL Group 3: Quest Platform 2.0; Fast/Fast; 2.5 mg/mL Group 4: Stryker Spy-Elite; Fast/Fast; 2.5 mg/mL Group 5: Quest Platform 2.0; Fast/Fast; 0.5 mg/mL"