Assessment of normal reference values for thyroid uptake of technetium-99m pertechnetate in a Saudi population.

Background: Thyrotoxicosis is a common medical problem. Thyroid nuclear imaging with either I or technetium-99m (Tc-99m) pertechnetate are used to determine the cause. Although I has been the standard technique, Tc-99m pertechnetate is now commonly used, acceptable and easier to perform.