Examination of the Blood Supply of the Intestine Before Suturing the Ends of the Intestine.

"LSCI measurements will be taken before and after the formation of the anastomosis, with the surgeon blinded to the measurements to prevent any influence on surgical decision-making. The surgery will be performed as standard-of-care, unaffected by the LSCI measurements.~Following the surgery, the LSCI images will be presented to the surgeon, who will complete a questionnaire assessing whether the LSCI images, if presented perioperatively, would have influenced their decision regarding the location of the anastomotic site. Additionally, the surgeon will be asked if they consider LSCI to be a useful intraoperative tool in general. The surgical case and the series of LSCI images will also be presented to an independent surgeon, who will answer the same set of questions.~The LSCI measurements will be correlated with 30-day complication rates, with a specific focus on anastomotic leakage (AL).~Microcirculation is assessed using LSCI at a wavelength of 785 nm (MoorFLPI-2, Moor Instruments"