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
Joseph Colon Trabotto Joseph Colon Trabotto Joseph Colon ben Solomon Trabotto, also known as Maharik, (c. 1420 in Chambéry – 1480) was a 15th-century rabbi who is considered Italy's foremost Judaic scholar and Talmudist of his era. Colon (whose name is related to the French word "", or 'dove') was a scion of the Trabotto family, which traced its lineage to Rashi and was known for its large number of scholars. After the final expulsion of Jews from the French Kingdom in 1394, his family emigrated first to the Franche-Comté and subsequently settled in the city of Chambéry, the capital of the Duchy