Standardization of I-124 by three liquid scintillation-based methods

被引：2
作者：
Bergeron, D. E. [1 ]
Cessna, J. T. [1 ]
Fitzgerald, R. [1 ]
Pibida, L. [1 ]
Zimmerman, B. E. [1 ]
机构：
[1] NIST, Radiat Phys Div, Gaithersburg, MD 20899 USA
来源：
APPLIED RADIATION AND ISOTOPES | 2019年 / 154卷
关键词：
Iodine-124; Liquid scintillation counting; Anticoincidence; Monte Carlo; Dose calibrator; Positron emission tomography; Quantitative imaging; Fluorine-18; DECAY DATA; COINCIDENCE; UNCERTAINTIES; CALIBRATION; F-18;
D O I：
10.1016/j.apradiso.2019.108849
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A solution of I-124 was standardized for activity by 4 pi beta(LS)-gamma(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 F-18, was identified and explained.
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页数：7
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