Browsing by Author "Ilter, J"

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    Primary standardisation of technetium-99m by liquid scintillation coincidence counting
    (Elsevier B. V., 2020-02) van Wyngaardt, WM; Tobin, SM; Lee, S; Smith, ML; Jackson, TW; Ilter, J; Howe, B; Sarbutt, A
    Technetium-99m was standardised by the 4π(LS)ce-γ coincidence extrapolation method. Sensitivity of the 4π(LS) channel to two types of radiation, namely conversion electrons and γ-rays, resulted in incorrect activity values being obtained when this was not adequately accounted for. Measurements were more robust when the LS detection efficiency was optimised, and when a γ-window setting was used that monitored the combined LS efficiency for conversion electrons and γ-rays. The primary standard was internationally compared through participation in the BIPM.RI(II)-K4.Tc99m key comparison. © 2019 Elsevier Ltd