Earticle

초록

영어

Background: In case of radiation emergencies, internal exposure monitoring for the members of public will be required to confirm internal contamination of each individual. In-vivo monitoring technique using portable gamma spectrometer can be easily applied for internal exposure monitoring in the vicinity of the on-site area. Materials and Methods: In this study, minimum detectable doses (MDDs) for 134Cs, 137Cs, and 131I were calculated adjusting minimum detectable activities (MDAs) from 50 to 1,000 Bq to find out the optimal in-vivo counting condition. DCAL software was used to derive retention fraction of Cs and I isotopes in the whole body and thyroid, respectively. A minimum detectable level was determined to set committed effective dose of 0.1 mSv for emergency response. Results and Discussion: We found that MDDs at each MDA increased along with the elapsed time. 1,000 Bq for 134Cs and 137Cs, and 100 Bq for 131I were suggested as optimal MDAs to provide in-vivo monitoring service in case of radiation emergencies. Conclusion: In-vivo monitoring program for emergency response should be designed to achieve the optimal MDA suggested from the present work. We expect that a reduction of counting time compared with routine monitoring program can achieve the high throughput system in case of radiation emergencies.

목차

ABSTRACT
 Introduction
 Materials and Methods
  1. General MDAs of the concerned radionuclides
  2. Calculation of MDDs along with the MDAs
  3. Evaluation of MDA using portable in-vivo counter
 Results and Discussion
  1. Derived bioassay functions and MDDs
  2. Optimized in-vivo monitoring program
  3. Discussions on the optimized monitoring condition
 Conclusion
 Acknowledgements
 References

키워드

저자

• Wi-Ho Ha [ National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul, Korea, Department of Nuclear Engineering, Hanyang University, Seoul, Korea ] Corresponding author
• Jong Kyung Kim [ Department of Nuclear Engineering, Hanyang University, Seoul, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629