Comparison of Radioactivity Measurement with Radionuclide Calibrators in Nuclear Medicine Centers.
- Author:
Hye Kyung SON
1
;
Ji Hye KIM
;
Chunil LIM
;
Hyun Kyu YANG
;
Ki Jung PARK
;
Heon Jin OH
;
Hyeog Ju KIM
;
Dong Sup KIM
Author Information
1. Radiation Safety Division, National Institute of Food and Drug Safety Evaluation, Seoul, Korea. mild1763@korea.kr
- Publication Type:Original Article
- Keywords:
Comparison of radioactivity measurement;
Radionuclide calibrator;
I-131;
Tc-99m;
I-123
- MeSH:
Dietary Sucrose;
Follow-Up Studies;
Humans;
Nuclear Medicine;
Quality Control;
Radioactivity
- From:Korean Journal of Medical Physics
2010;21(1):16-21
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
To acquire good image quality and to minimize unnecessary radiation dose to patients, it is important to ensure that the radiopharmaceutical administered is accurately measured. Quality control of radionuclide calibrators should be performed to achieve these goals. The purpose of this study is to support the quality control of radionuclide calibrators in nuclear medicine centers and to investigate the level of measurement accuracy of the radionuclide calibrators. 58 radionuclide calibrators from 45 nuclear medicine centers, 74 radionuclide calibrators from 58 nuclear medicine centers, and 60 radionuclide calibrators from 45 nuclear medicine centers were tested with I-131, Tc-99m and I-123, respectively. The results showed that 81% of calibrators for I-131, 61% of calibrators for Tc-99m and 67% of calibrators for I-123 were within +/-5%. 17% of calibrators for I-131, 20% of calibrators for Tc-99m and 15% of calibrators for I-123 had a deviation in the range 5%<|delta|< or =10%. 2% of calibrators for I-131, 19% of calibrators for Tc-99m and 18% of calibrators for I-123 had a deviation of |delta|>10%. Follow-up measurements were performed on the calibrators whose error exceeded the +/-10% limit. As a result, some of the calibrator showed an improvement and their deviation decreased below the +/-10% limit. The results have shown that such comparisons are necessary to improve the accuracy of the measurement and to identify malfunctioning radionuclide calibrators.
