- The patient will be asked to drink the barium liquid and to swallow baking soda crystals. It is important not to belch, as the gas assists the radiologist in evaluation.
- The patient will stand behind a machine called a fluoroscope (a device used for the immediate showing of an X-ray image).
- The patient may be asked to move in different positions and to hold his or her breath while the X-rays are taken.
- If the small intestine is to be examined, the patient may be asked to drink additional barium and a series of X-rays will be taken until the barium reaches the colon.