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
Gisela Colon Gisela Colon Gisela Colon (born 1966) is an American contemporary artist who has developed a unique vocabulary of "organic minimalism," breathing life-like qualities into reductive forms. Originally from San Juan Puerto Rico, but currently living and working in Los Angeles, California, Colon creates work that is the product of cross-cultural influences, fusing characteristics of Minimalism, Light and Space, Finish Fetish, Op Art, and Kinetic Art. Colon is best known for meticulously creating light-activated sculptures through industrial and technological processes. She is one of the few women working in the Light and Space and Finish/Fetish movements. Recognized as a successor and