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Evaluation of [Ac]Ac-DOTA for α-Therapy of Bone Metastases.

Curr Radiopharm 2018 ;11(3):223-230

Institute of Nuclear Chemistry, Johannes Gutenberg University, Mainz, Germany.

Background: Conjugates of bisphosphonates with macrocyclic chelators possess high potential in bone targeted radionuclide imaging and therapy. DOTAZOL, zoledronic acid conjugated to DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid), demonstrated promising results in vivo in small animals as well as in first patient applications using 68Ga for diagnosis via PET and the lowenergy β-emitter 177Lu for therapy of painful bone metastases. In consideration of the fact that targeted α-therapy probably offers various advantages over the use of β--emitters, the 225Ac-labelled derivative [225Ac]Ac-DOTAZOL was synthesized and evaluated in vivo. Read More

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January 2019
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