Upper gastrointestinal series (or study), whereas the barium enema is called a lower gastrointestinal series (or study). In upper gastrointestinal series examinations, the barium sulfate is mixed with water and swallowed orally, whereas in the lower gastrointestinal series (barium enema), the barium contrast agent is administered as an enema through a small tube inserted into the rectum. Barium X-ray examinations are useful tools for the study of appearance and function of the parts of the gastrointestinal tract. They are used to diagnose and monitor esophageal reflux, dysphagia, hiatus hernia, strictures, diverticula, pyloric stenosis, gastritis, enteritis, volvulus, varices, ulcers, tumors, and gastrointestinal dysmotility, as
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