Published August 14, 2023 | Version v1
Project deliverable Open

Nuclear data for day-1 radionuclides


  • 1. National Physical Laboratory


Nuclear decay data are fundamental constants of a radionuclide’s decay process and are unique to that radionuclide. Nuclear decay data have been identified as being of importance to a wide range of activities in nuclear medicine, from the production of radionuclides to their use in nuclear medicine clinics. Accurate and precise data on nuclear decay is therefore necessary to ensure confidence in all activities undertaken throughout the process of using radiopharmaceutical products.

This report provides a review of the status of the nuclear decay data of the diagnostic or therapeutic radionuclides in the PRISMAP catalogue available at the start of the project in May 2021. There were eighteen original radionuclides available at the commencement of the project, which were identified as Sc-44, Sc-47, Cu-64, Cu-67, Ag-111, La-135, Tb-149, Tb-152, Tb-155, Tb-161, Er-165, Ho-166, Er-169, Yb-175, Pt-195m, Bi-213, At-211 and Ac-225. This review does not include a review of the radionuclides Dy-166 and Tm-165 that are used as generators to produce Ho-166 and Er-165 and has focused on these progenies instead. Whilst PRISMAP has extended their radionuclide catalogue since the initiation of the project to now encompass a total of twenty-six radionuclides at the time of publishing this report, these additional radionuclides have not been covered by this review. These may be included in a future review.

A summary of the current state of nuclear decay data of the initial eighteen radionuclides have been covered using the latest evaluations published by the Nuclear Data Sheets or the Decay Data Evaluation Project. Where recent studies have been published since the last evaluation a comparison to these new values have been included. Based on these reviews’ recommendations, where the current literature is lacking or there is room for improvement, new nuclear decay data studies are needed or have been proposed.



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PRISMAP – The European medical isotope programme: Production of high purity isotopes by mass separation 101008571
European Commission