The Korean Journal of Nuclear Medicine Technology (핵의학기술)
- Volume 13 Issue 3
- /
- Pages.123-131
- /
- 2009
- /
- 1229-9901(pISSN)
- /
- 2982-8406(eISSN)
Detection and Measurement of Nuclear Medicine Workers' Internal Radioactive Contamination
핵의학과 종사자의 방사성동위원소 체내오염 측정
- Jeong, Gyu-Hwan (Korea Institute of Nuclear Safety) ;
- Kim, Yong-Jae (Korea Institute of Nuclear Safety) ;
- Jang, Jeong-Chan (Department of Nuclear Medicine, Asan Medical Center) ;
- Lee, Jai-Ki (Department of Nuclear Engineering in Hanyang University)
- Received : 2009.06.15
- Accepted : 2009.07.13
- Published : 2009.10.10
Abstract
Purpose: We tested a sample of nuclear medicine workers at Korean healthcare institutions for internal contamination with radioactive isotopes, measuring concentrations and evaluating doses of individual exposure. Materials and Methods: The detection and measurement was performed on urine samples collected from 25 nuclear medicine workers at three large hospitals located in Seoul. Urine samples were collected once a week, 100~200 mL samples were gathered up to 6~10 times weekly. A high-purity germanium detector was used to measure gamma radiations in urine samples for the presence of radioactive isotopes. Based on the detection results, we estimated the amounts of intake and committed effective doses using IMBA software. In cases where committed effective doses could not be adequately evaluated with IMBA software, we estimated individual committed effective doses for radionuclides with a very short half life such as
본 논문에서는 국내 의료기관 종사자 중 핵의학과 종사자 일부를 선정하여 방사성동위원소에 의한 체내오염 여부와 정도를 정량적으로 측정한 후 그 결과에 근거하여 선량을 평가하였다. 선량평가를 위해 서울시내에 소재하는 대형병원 3곳의 핵의학과 종사자 25명을 측정 대상자로 선정한 후 각 개인의 소변시료를 채취하여 측정하였다. 시료는 주 1회 채취하였으며 종사자에 따라 6~10회에 걸쳐 각 회당 100~200 mL 정도의 양을 채취한 후 고순도게르마늄반도체검출기를 사용하여 시료를 측정 하였다. 측정된 결과에 근거하여 방사성동위원소의 섭취량을 평가하였고 예탁유효선량을 평가하는 도구로 IMBA 전산프로그램을 사용하였다. IMBA 프로그램으로 평가가 불가능한 반감기가 매우 짧은
Keywords
- Committed effective dose;
- High purity germanium detector;
- Internal dosimetry;
- Nuclear medicine;
- Urine sample