RT Journal Article SR Electronic T1 Cross-Linked Polyethylene Glycol Beads to Separate 99mTc-Pertechnetate from Low-Specific-Activity Molybdenum JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1910 OP 1914 DO 10.2967/jnumed.114.143834 VO 55 IS 11 A1 François Bénard A1 Stefan K. Zeisler A1 Milan Vuckovic A1 Kuo-Shyan Lin A1 Zhengxing Zhang A1 Nadine Colpo A1 Xinchi Hou A1 Thomas J. Ruth A1 Paul Schaffer YR 2014 UL http://jnm.snmjournals.org/content/55/11/1910.abstract AB We report a kit-based approach for the purification of sodium pertechnetate (99mTcO4−) from solutions with high MoO42− content. Methods: Cross-linked polyethylene glycol resins (ChemMatrix) were used to separate 99mTc and molybdenum in 4N NaOH. The resins were loaded at various flow rates and eluted with water to release 99mTc. The 99mTc solution was passed through a cation exchange resin and an alumina cartridge, followed by saline elution. This process was tested with cyclotron-produced 99mTc using an automated system and disposable kits. Results: Optimal results were obtained by loading 500 mg of resin at flow rates of up to 3.1 mL/min, with quantitative extraction of 99mTc from the molybdate solution and complete release of 99mTc after elution with water. The automated system was highly efficient at isolating Na99mTcO4 within minutes, with a recovery rate of 92.7% ± 1.1% (mean ± SD) using cyclotron-produced 99mTc. Conclusion: ChemMatrix resins were highly effective at separating 99mTcO4− from molybdate solutions.