The software tool with its underlying methodology can be employed to objectively and reproducibly estimate the time integrated activity coefficient and its standard error for most time activity data in molecular radiotherapy.

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We would like to draw your attention to a typographical error in our recent work.1 Although the equations were properly implemented in the software as described in previous work, 2 Eqs. (5) and (6) were not presented correctly and should actually run: AICc = −2 ln(P ) + 2(K + 1)To correct the equations, the minus before the second term was replaced by a plus.