Double-contrast barium enema bowel. Double-contrast barium enema A double-contrast barium enema is a form of contrast radiography in which x-rays of the colon and rectum are taken using two forms of contrast to make the structures easier to see. A liquid containing barium (that is, a radiocontrast agent) is put into the rectum. Barium is a silver-white metallic compound that outlines the colon and rectum on an x-ray and helps show abnormalities. Air is also put into the rectum and colon to further enhance the x-ray. Double-contrast barium enemas are less invasive than a colonoscopy and have comparatively fewer issues in a viable
Colon (punctuation) Finnish "USA:n" and Swedish "USA:s" for the genitive case of "USA", Finnish "%:ssa" for the inessive case of "%", or Finnish "20:een" for the illative case of "20"). In Swedish, the colon is used in contractions, such as "S:t" for "Sankt" (Swedish for "Saint"), e.g. in the Stockholm metro station "S:t Eriksplan". This can even occur in people's names, for example ("" for "Axelson"). The colon was also used to mark abbreviations in early modern English. In Armenian, a colon indicates the end of a sentence, similar to a Latin full stop or period. The colon is also used as