
Decay Lab
Radionuclide Decay Tool
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What's New in Decay Lab
2.0.6
August 30, 2026
Radionuclides are now labelled by what they are used for. • PET, SPECT, therapy and generator icons throughout, on the element list, the nuclide list, the energy states, and the calculator itself • Elements used in nuclear medicine are grouped first, with everything else A to Z • Expanded coverage of clinically used radionuclides, each labelled with the energy state actually used in the clinic • Yttrium added to the common elements Fixes • Corrected the energy state selected by default. Several nuclides, including Pb-203, Tl-201, In-111, Y-90 and At-211, opened on a state that is not the clinical one, giving the wrong half-life. If you noted figures for these in an earlier version, please re-check them. • The energy-state screen could open with its first row unresponsive
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