Patent 7479261 was granted and assigned to Isoray Medical, Inc. on January, 2009 by the United States Patent and Trademark Office.
The present invention provides a method of separating and purifying Cesium-131 (Cs-131) from Barium (Ba). Uses of the Cs-131 purified by the method include cancer research and treatment, such as for the use in brachytherapy. Cs-131 is particularly useful in the treatment of faster growing tumors.