Radiochemical separation methods for preparation of biomedical cyclotron radionuclides

A short review of the radiochemical methods for preparation of widely used or promising cyclotronproduced radionuclides for nuclear medicine and biome dical or environmental studies is given. The presented data include the cur rent status of the production of some gamma-emitters (Ru-97, In-111, I-123, Tl-201), generator-pairs (Ge-68/Ga-68, Sr-82/Rb-82, Ra-128/Cs-128, W-178/T a-178), radioisotopes for metabolism studies (Al-26, Cu-67, Pu-237) and act inides tracers for environmental researches (Np-235, Np-236, Pu-236). The c onditions for preparation of high-purity isotopes have been investigated an d procedures including target chemistry design were developed.