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  • Title: Radioactivity measurements of 177Lu, 111In and 123I by different absolute methods.
    Author: Rezende EA, Correia AR, Iwahara A, da Silva CJ, Tauhata L, Poledna R, da Silva RL, de Oliveira EM, de Oliveira AE.
    Journal: Appl Radiat Isot; 2012 Sep; 70(9):2081-6. PubMed ID: 22401938.
    Abstract:
    The activities of (177)Lu, (111)In and (123)I solutions have been absolutely determined using three different measurement methods. (177)Lu solution was standardized using the 4πβ(PC)-γ(NaI) coincidence and 4πβ(LS)-γ(NaI) live-timed anticoincidence methods. For the (111)In and (123)I solutions, besides these two mentioned methods, the coincidence sum-peak method was also applied. The measured activities results using these different methods are consistent within the evaluated experimental uncertainties demonstrating the equivalence of these methods. As an additional contribution to nuclear data, the half-lives have been determined using a well type IG12 ionization chamber.
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