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 at Abbott Magic Company and FAB Magic. Each August more than 1,000 magicians and lovers of magic gather there for "Abbott's Magic Get-Together", a 4-day magic convention, doubling the population, sharing magic tricks, and recollecting their knowledge of the famous occupation. The convention concludes each day with an evening show at Colon High School. The Colon High School teams are known as the "Magi", and the high school mascot is a white rabbit wearing a black top hat. Also, a few of the local shops exploit the "magic" theme in their titles. Colon also has a small Amish community. Colon,