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 cleansing of dead cells. Excessive use of enemas has also been associated with heart problems, such as heart failure, as well as heart attacks related to electrolyte imbalances when performed as a coffee enema. Frequent enemas or other colon-cleansing tools may lead to dependence and inability to defecate without assistance, as well as potential withdrawal symptoms. Herbs taken orally may modulate the absorption or the activity of prescription medications. Medical doctor Harriet Hall writes that "The colon cleanses itself"... The idea that its walls are coated with years-old hamburger residue is preposterous". Colonic irrigation also known as colon hydrotherapy, colonic hydrotherapy,