The Effect of Intra-abdominal Pressure on Peritoneal Perfusion During Laparoscopic Colorectal Surgery

Inclusion Criteria: * Adults (≥ 18 years old) * Scheduled for robot-assisted colorectal laparoscopic surgery Exclusion Criteria: * Severe liver- or renal disease * Pregnancy or lactation * Planned diagnostics or treatment with radioactive iodine \< 1 week after surgery * BMI \>35 kg/m2 * Known or suspected hypersensitivity to indocyanine green, sodium iodide or iodine * Hyperthyroidism or thyroid adenomas * Use of medication interfering with ICG absorption as listed in the summary of product characteristics.