Progress in Medical Physics (한국의학물리학회지:의학물리)

Korean Society of Medical Physics (한국의학물리학회)
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Reference Dosimetry and Calibration of Glass Dosimeters for Cs-137 Gamma-rays

연구용 세슘-137 조사기에 대한 흡수선량 측정과 유리선량계 교정에 관한 연구

  • Moon, Young Min (Department of Materials Physics, Dong-A University) ;
  • Rhee, Dong Joo (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Kim, Jung Ki (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Kang, Yeong-Rok (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Lee, Man Woo (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Lim, Heuijin (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Jeong, Dong Hyeok (Research Center, Dongnam Inst. of Radiological & Medical Sciences)
  • 문영민 (동아대학교 신소재 물리학과) ;
  • 이동주 (동남권원자력의학원 연구센터) ;
  • 김정기 (동남권원자력의학원 연구센터) ;
  • 강영록 (동남권원자력의학원 연구센터) ;
  • 이만우 (동남권원자력의학원 연구센터) ;
  • 임희진 (동남권원자력의학원 연구센터) ;
  • 정동혁 (동남권원자력의학원 연구센터)
  • Received : 2013.08.07
  • Accepted : 2013.08.20
  • Published : 2013.09.30
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Abstract

In this research, the glass dosimeter was calibrated to measure the standard absorbed dose of the Cs-137 irradiator and absorbed dose in a biological sample. Absorbed dose in water for Cs-137 gamma ray was determined by the IAEA TRS-277 protocol. The PTW-TM30013 ion chamber and the PTW-TM41023 water phantom were utilized for measuring absorbed dose and the value was compared with the reading from DoseAce GD-302M glass dosimeter from Asahi Techno Glass Corporation for its calibration. The uncertainty of measurement ($1{\sigma}$) of the calibrated glass dosimeter was 2.7% and this result would be applied to improve the accuracy in measurement of absorbed dose in a biological sample.

본 연구에서는 방사선생물 분야에서는 사용하는 세슘-137 조사기에 대한 기준 흡수선량을 측정하고 시료의 방사선량 평가에 활용하기 위하여 유리선량계를 교정하였다. 세슘-137 감마선에 대하여 IAEA TRS-277 프로토콜을 적용하여 정밀하게 물흡수선량을 결정하였다. 기준 흡수선량 측정에는 PTW-TM300013 전리함과 PTW-TM41023 물팬텀을 사용하였으며, 유리선량계는 DoseAce사의 GD-302M 모델을 사용하였다. 교정된 유리선량계의 불확도(1 SD)는 약 2.7%로 평가되며, 본 결과는 연구용 시료의 방사선량 측정에 이용될 예정이다.

Keywords

References

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