Primary standardisation of technetium-99m by liquid scintillation coincidence counting.
4πβ-γ coincidence technique
Liquid scintillation counting
Tc-99m
Journal
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
ISSN: 1872-9800
Titre abrégé: Appl Radiat Isot
Pays: England
ID NLM: 9306253
Informations de publication
Date de publication:
Feb 2020
Feb 2020
Historique:
received:
29
03
2019
revised:
26
09
2019
accepted:
09
10
2019
pubmed:
2
11
2019
medline:
2
11
2019
entrez:
2
11
2019
Statut:
ppublish
Résumé
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.
Identifiants
pubmed: 31675614
pii: S0969-8043(19)30383-5
doi: 10.1016/j.apradiso.2019.108935
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
108935Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.