Upper gastrointestinal series tract in addition to barium, and this procedure is called double-contrast imaging. In this case the gas is referred to as the negative contrast medium. Traditionally the images produced with barium contrast are made with plain-film radiography, but computed tomography is also used in combination with barium contrast, in which case the procedure is called CT enterography. Various types of barium X-ray examinations are used to examine different parts of the gastrointestinal tract. These include barium swallow, barium meal, barium follow-through, and barium enema. The barium swallow, barium meal, and barium follow-through are together also called an upper gastrointestinal series
Colon, Michigan Sr. (The Great Blackstone) The United States Congress recognizes Colon as "The Magic Capital of the World." It is the home of the Abbott Magic Company, founded by magicians Percy Abbott, an Australian and friend of Blackstone's, and Recil Bordner, originally from Eaton, Ohio, in 1934. The company has a local store, showroom and a factory where magicians' supplies and new tricks are manufactured. Abbott Magic is well known among professional stage acts, with customers around the world. FAB Magic Company and the Sterlini Magic Manufacturing Company are also based in Colon. Weekly magic shows are performed during the summer