Determination of the ~(121)Te gamma emission probabilities associated with the production process of radiopharmaceutical NaI~(123)I

摘要

The ~(123)I 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. The ~(121)Te is an impurity that arises during the ~(123)I 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.