Oral cholecystogram
Alternative names:
gallbladder series; gallbladder X-ray; OCG; X-ray of the gallbladder
How the test is performed:
The test is performed in a hospital radiology department or in the health care provider's office by an X-ray technician. The night before the test, you swallow 6 tablets (1 at a time) that contains the contact medium. At the hospital, you will lie on the X-ray table and will be asked to assume various positions. The health care provider may examine the gallbladder with a fluoroscope (a special X-ray that projects the image onto a TV-like monitor). Then you may be asked to drink a high-fat formula that will cause the gallbladder to contract and release some bile. X-rays will then be taken at timed intervals.
How to prepare for the test:
The health care provider must be notified if you are pregnant or allergic to X-ray contrast material (contains iodine). The day before the test you will be asked to eat a high-fat meal (eggs, butter, milk, salad oils, or fatty meats) at noon. That evening, eat a fat-free meal (fruits, vegetables, bread, tea or coffee, and only lean meat). Two hours after the fat-free meal, take 6 tablets, 1 at a time, which contain the contrast medium. After taking the tablets, consume no fluids until after the test.
Infants and children:
The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child's age:
How the test will feel:
There is no discomfort from the test. One will be hungry and thirsty. Some people experience side effects from the contrast material. There is a slight chance of developing some diarrhea.
Why the test is performed:
The test is used to help in diagnosing disorders of the liver and gallbladder, including gallstones and tumors.
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