RT Journal Article SR Electronic T1 Effect of Technetium-99m on a Computerized Tomography Scan JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 231 OP 232 VO 8 IS 4 A1 Chopp, Michael A1 Hartson, Mary YR 1980 UL http://tech.snmjournals.org/content/8/4/231.abstract AB We compared the photon fluence of 20 mCi of Tc-99m to the x-ray photon fluence found in a computerized tomography scan. Diagnostic radionuclide activities of Tc-99m used in nuclear medicine are found to have a negligible effect on the information content of a CT scan.