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Standardization of I-124 by three liquid scintillation-based methods.
Bergeron, D E; Cessna, J T; Fitzgerald, R; Pibida, L; Zimmerman, B E.
Affiliation
  • Bergeron DE; Radiation Physics Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899-8462, USA. Electronic address: denis.bergeron@nist.gov.
  • Cessna JT; Radiation Physics Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899-8462, USA.
  • Fitzgerald R; Radiation Physics Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899-8462, USA.
  • Pibida L; Radiation Physics Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899-8462, USA.
  • Zimmerman BE; Radiation Physics Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899-8462, USA.
Appl Radiat Isot ; 154: 108849, 2019 Dec.
Article in En | MEDLINE | ID: mdl-31465950
ABSTRACT
A solution of 124I was standardized for activity by 4πß(LS)-γ(NaI) live-timed anticoincidence (LTAC) counting, with confirmatory measurements by triple-to-double coincidence ratio (TDCR) and CIEMAT-NIST efficiency tracing (CNET) liquid scintillation counting. The LTAC-based standard was shown to be in agreement (within k = 1 uncertainties) with previous measurements at NIST and elsewhere. Calibration settings for radionuclide calibrators were determined and a discrepancy with literature values, partially due to a calibration methodology dependent upon an erroneous setting for 18F, was identified and explained.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Appl Radiat Isot Year: 2019 Document type: Article
Fulltext
Print
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Appl Radiat Isot Year: 2019 Document type: Article