METHOD FOR PRODUCING THORIUM (STARTING MATERIAL) RADIONUCLIDE FOR MAKING THERAPEUTIC PREPARATION BASED ON BISMUTH RADIONUCLIDE Russian patent published in 2003 - IPC

FIELD: reactor technology of radionuclide production for nuclear medicine. SUBSTANCE: method includes irradiation of target that contains natural isotope of thorium ²³⁰Th by bremsstrahlung gamma-quanta of electron accelerator. Target isotope thorium-229 is accumulated in target in the course of threshold nuclear reaction of γ which is product of natural disintegration of ²³⁰Th(γ,n) (²³⁰ThF₄). Target material is ²³⁰ThO₂ or ²³⁸U, or metal thorium-230. Bismuth-213 base therapeutic preparation produced in the process is noted for high specific activity and radioisotope purity. EFFECT: improved quality of product, reduced labor consumption for its production. 2 cl, 1 dwg