Determination of the 121Te gamma emission probabilities associated with the production process of radiopharmaceutical NaI[123I]

8th Brazilian Congress on Metrology

De Araújo, M.T.F.^1,2 ; Poledna, R.^1 ; Delgado, J.U.^1 ; De Almeida, M.C.M.^1 ; Lopes, R.T.^2 ; Silva, R.L.^1 ; Cagido, A.C.F.^3

Instituto de Radioproteção e Dosimetria/Comissão Nacional de Energia Nuclear, Av. Salvador Allende s/no, Barra da Tijuca, Rio de Janeiro

CEP 22783-127, Brazil^1

Programa de Engenharia Nuclear, Universidade Federal do Rio de Janeiro (PEN/COPPE, UFRJ), Caixa Postal 68590, Ilha do Fundão, Rio de Janeiro

CEP 21945-970, Brazil^2

Universidade Federal do Paraná, UFPR, Ciências Geodésicas, Caixa Postal:19001, Curitiba

PR

CEP:81531-990, Brazil^3

关键词: Efficiency curves;    Gamma emission;    Production process;    Sum-peak method;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012097/pdf
DOI  :  10.1088/1742-6596/733/1/012097

来源: IOP

【 摘 要 】

The123I is widely used in radiodiagnostic procedures in nuclear medicine. According to Pharmacopoeia care should be taken during its production process, since radionuclidic impurities may be generated. The121Te is an impurity that arises during the123I production and determining their gamma emission probabilities (Pγ) is important in order to obtain more information about its decay. Activities were also obtained by absolute standardization using the sum-peak method and these values were compared to the efficiency curve method.