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Gallium (Ga.) scan
Definition:
A gallium scan is a nuclear medicine examination using a radioactive material (gallium) to look for areas of hidden infection in the body. Alternative Names:
Liver gallium scan; Bony gallium scan Text Continues Below
How the test is performed:
A rubber strap (tourniquet) is tied around the upper arm to help locate the vein, and the gallium is injected into the vein. The scan is taken with a special camera that detects where the gallium has accumulated in the body. If acute inflammatory disease is suspected, the scan is performed 4 to 6 hours after injection; otherwise the scan is taken 24 to 48 hours (occasionally 72 hours) after the injection. During the scan, which takes 30 to 60 minutes, the patient must remain still. This test usually does not require a stay in the hospital. How to prepare for the test:
The night before the test, a laxative may be necessary to clean out the bowel so that stool does not interfere with the test. An enema may instead be given 1 to 2 hours before the test.
Food and liquids are not restricted. You must sign a consent form. Remove all jewelry and metal objects. Infants and children:
The preparation you can provide for this test depends on your child's age, previous experiences, and level of trust. For general information regarding how you can prepare your child, see the following: How the test will feel:
The enema may be uncomfortable but does not cause pain. The injection will feel like a sharp prick, and the site may be tender to the touch for a few minutes.
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