The gallium scan is a type of nuclear scan involving radioactive gallium which helps determine whether a patient has inflammation in the lungs. Gallium is injected in a vein and a series of x-rays are taken to identify where the gallium has accumulated in the lungs. This test is most often performed when there is evidence of inflammation in the lungs (sarcoidosis).
Review Date: 8/21/2016
Reviewed By: Denis Hadjiliadis, MD, MHS, Paul F. Harron, Jr. Associate Professor of Medicine, Pulmonary, Allergy, and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.