Active Ingredient History
Yb-169 is a radioisotope of rare-earth element ytterbium. Yb-169 emits gamma-photons with an average energy of 93 keV and decays with a half‐life of 32 days. Yb-169 has an application to brachytherapy. Implants for direction modulated brachytherapy are developed for the treatment of locally advanced cervical cancer. Yb-169 was suggested for the use in intravascular brachytherapy for the treatment of arterial restenosis. An injected complex of Yb-169 with DPTA was used for the treatment of internal contamination with americium, curium, or plutonium and other conditions. NCATS
Food Contamination, Radioactive (approved 1976)
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