Abdominal x-ray as a scout film for other procedures such as barium enemas. An upper gastrointestinal series is where a contrast medium, usually a radiocontrast agent such as barium sulfate barium salt mixed with water, is ingested or instilled into the gastrointestinal tract, and X-rays are used to create radiographs of the regions of interest. The barium enhances the visibility of the relevant parts of the gastrointestinal tract by coating the inside wall of the tract and appearing white on the film. A lower gastrointestinal series is where radiographs are taken while barium sulfate, a radiocontrast agent, fills the colon via an
American Society of Colon and Rectal Surgeons Accreditation Program for Rectal Cancer. American Society of Colon and Rectal Surgeons The American Society of Colon and Rectal Surgeons (ASCRS), formerly the American Proctologic Society, is a professional society for surgeons specializing in colorectal surgery. It is one of the older surgical societies, having been established in 1899. The organization was established as the American Proctologic Society in 1899, at a meeting held in Columbus, Ohio: The name of the organization was changed to American Society of Colon and Rectal Surgeons in 1973 "to indicate more clearly the scope of its specialty". The ASCRS has described its activities as