Lung gallium (Ga.) scan

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Gallium injection

Overview

Risks

Results

Lung gallium (Ga.) scan

Definition:

Lung gallium (Ga.) scan is a type of nuclear scan involving radioactive gallium, which helps determine whether a patient has inflammation in the lungs.

Alternative Names:

Gallium 67 lung scan; Lung scan; Gallium scan - lung; Scan - lung

How the test is performed:

Gallium is injected into a vein. After about 6 hours for an acute (active) infection, or 24-hours for a chronic problem, the scan will take place. You lie on a movable table that will be positioned under the scanner (gamma camera). The camera detects the gamma rays emitted by the gallium.

The information is then transmitted to a computer, which displays the image on the screen. The technician can move the scanner to get a clearer picture.

During the scan, it is important that you remain still to get a clear image. The technician can assist in making you comfortable before the scan begins. The test will take about 30 - 60 minutes.

How to prepare for the test:

You must sign an informed consent form. Several hours to 1 day before the scan, the injection of gallium will be administered to you at the hospital or doctor's office.

Just before the scan, remove jewelry, dentures, or other metal objects that can affect the scan. Replace the clothing on the upper half of your body with a hospital gown.

How the test will feel:

The injection of gallium will sting, and the puncture site may hurt when touched for several hours or days. The scan is painless. However, you must remain still. This may cause discomfort for some patients. The wait between the injection and scan can cause some patients to become agitated.

Why the test is performed:

This test is most often performed when there is evidence of inflammation in the lungs (sarcoidosis).

Review Date: 8/3/2005
Reviewed By: Jonathan Gross, M.D., Department of Radiology, Columbia University Medical Center, New York, NY. Review provided by VeriMed Healthcare Network.

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