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In the production of radioiodine via charged particle activation of isotopically enriched TeO 2 and subsequent heating of the irradiated target, some TeO 2 is lost. Again, use of recovered TeO 2 for radioiodine production showed that impurities are present, which prevent complete volatilization of radioiodine from the heated target. An effective purification procedure for recovered TeO 2 has been developed, resulting in a yield of 95–97%. The procedure developed may also be used to purify Te metal.

For more than 10 years Radium Institute is producing radiopharmaceuticals for St. Petersburg (Russia) hospitals. We have developed technologies for sodium iodide, sodium iodohippurate, MIBG and BMIPP, labeled by iodine‐123, and gallium‐67 citrate. Radionuclidic purity of 99,98% is reached for radiopharmaceuticals labeled by iodine‐123. Radionuclidic purity is over 99.9% for gallium‐67 citrate on the date of delivery. Radiochemical purity of 95% and more is reached through the application of appropriate technologies for each RPH. It takes no longer than 4 hours for all technologies. Over 150,000 patients were investigated.