| barium chloride | Formerly used as a heart tonic and for varicose veins; extremely toxic. (05 Mar 2000) |
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| barium compounds | Inorganic compounds that contain barium as an integral part of the molecule. (12 Dec 1998) |
| barium contrast material | This radiopaque contrast material is either swallowed or given as a enema for the purpose of demonstrating the anatomy of the gastrointestinal tract using X-rays. (27 Sep 1997) |
| barium hydroxide | Ba(OH)2;a caustic compound combined with calcium hydroxide in a carbon dioxide absorbent; used in anaesthetic circuits. See: absorbent. (05 Mar 2000) |
| barium meal | Oral administration of barium sulfate suspension for radiographic study of the upper gastrointestinal tract (British usage). (05 Mar 2000) |
| barium oxide | BaO;it is caustic, forming the strong base, Ba(OH)2, in water; used as a dehydrating agent. Synonym: baryta. (05 Mar 2000) |
| barium radioisotopes | Unstable isotopes of barium that decay or disintegrate emitting radiation. Ba atoms with atomic weights 126-129, 131, 133, and 139-143 are radioactive barium isotopes. (12 Dec 1998) |
| barium solution | A liquid containing barium sulfate, which shows up on X-rays. It outlines organs of the body so they can be seen on X-ray film. (12 Dec 1998) |
| barium sulfate | <chemical> Sulfuric acid, barium salt (1:1). A compound used as an X-ray contrast medium that occurs in nature as the mineral barite. It is also used in various manufacturing applications and mixed into heavy concrete to serve as a radiation shield. Pharmacological action: contrast media. Chemical name: Sulfuric acid, barium salt (1:1) (12 Dec 1998) |
| barium sulfide | A poisonous grayish yellow powder, used as a depilatory. (05 Mar 2000) |
| barium swallow | An upper gastrointestinal series (barium swallow) is an X-ray test used to define the anatomy of the upper digestive tract. Women who are or may be pregnant should notify the doctor requesting the procedure and the radiology staff. The test involves filling the oesophagus, stomach, and small intestines with a white liquid material (barium). (12 Dec 1998) |
| air contrast enema | A double contrast enema in which air is introduced after coating of the colon with a dense barium suspension for radiographic study. Synonym: air contrast barium enema. (05 Mar 2000) |
| analeptic enema | An enema of a pint of lukewarm water with one-half teaspoonful of table salt. (05 Mar 2000) |
| blind enema | The introduction into the rectum of a rubber tube to facilitate the expulsion of flatus. (05 Mar 2000) |
| contrast enema | Enema using barium or another contrast medium. (05 Mar 2000) |