핵의학 체내검사 업무 단계 별 피폭선량 측정 및 분석을 통한 피폭선량 감소 방안

• 영문명: The Plan of Dose Reduction by Measuring and Evaluating Occupationally Exposed Dose in vivo Tests of Nuclear Medicine
• 발행기관: 대한핵의학기술학회
• 저자명: 길상형(Sang Hyeong Kil) 임영현(Yeong Hyeon Lim) 박광열(Kwang Youl Park) 조경남(Kyung Nam Jo) 김정훈(Jung Hun Kim) 오지은(Ji Eun Oh) 이상엽(Sang Hyup Lee) 이수정(Su Jung Lee) 전지탁(Ji Tak Jun) 정의호(Eui Ho Jung)
• 간행물 정보: 『핵의학기술』Vol.14 No.2, 26~32쪽, 전체 7쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2010.10.30

영문 초록

Purpose: It is to find the way to minimize occupationally exposed dose for workers in vivo tests in each working stage within the range of the working environment which does not ruin the examination and the performance efficiency. Materials and Methods: The process of the nuclear tests in vivo using a radioactive isotope consists of radioisotope distribution, a radioisotope injection (⁹⁹ᵐTc, ¹⁸F-FDG), and scanning and guiding patients. Using a measuring instrument of RadEye-G10 gamma survey meter (Thermo SCIENTIFIC), the exposure doses in each working stage are measured and evaluated. Before the radioisotope injection the patients are explained about the examination and educated about matters that require attention. It is to reduce the meeting time with the patients. In addition, workers are also educated about the outside exposure and have to put on the protected devices. When the radioisotope is injected to the patients the exposure doses are measured due to whether they are in the protected devices or not. It is also measured due to whether there are the explanation about the examination and the education about matters that require attention or not. The total exposure dose is visualized into the graph in using Microsoft office excel 2007. The difference of this doses are analyzed by wilcoxon signed ranks test in using SPSS (statistical package for the social science) program 12.0. In this case of p<0.01, this study is reliable in the statistics. Results: It was reliable in the statistics that the exposure dose of injecting ⁹⁹ᵐTc-DPD 20 mCi in wearing the protected devices showed 88% smaller than the dose of injecting it without the protected devices. However, it was not reliable in the statistics that the exposure dose of injecting ¹⁸F-FDG 10 mCi with wearing protected devices had 26% decrease than without them. Training before injecting ⁹⁹ᵐTc-DPD 20 mCi to patient made the exposure dose drop to 63% comparing with training after the injection. The dose of training before injecting ¹⁸F-FDG 10 mCi had 52% less then the training after the injection. Both of them were reliable in the statistics. Conclusion: In the examination of using the radioisotope ⁹⁹ᵐTc, wearing the protected devices are more effective to reduce the exposure dose than without wearing them. In the case of using ¹⁸F-FDG, reducing meeting time with patients is more effective to drop the exposure dose. Therefore if we try to protect workers from radioactivity according to each radioisotope characteristic it could be more effective and active radiation shield from radioactivity.

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키워드

Occupationally exposed dose working stage radioisotope characteristic radiation shield