RT Journal Article SR Electronic T1 Expiration Times for Tc-99m JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 40 OP 41 VO 9 IS 1 A1 Ponto, James A. YR 1981 UL http://tech.snmjournals.org/content/9/1/40.abstract AB Expiration times of Tc-99m eluates may be shortened by the presence of Mo-99. Based on current limits for Mo-99 contamination, calculations are presented that establish expiration times for Tc-99m eluates.