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The Study on Design of Customized Radiation Protective Layer for Medical Radiation Dose Reduction

의료방사선 피폭선량 저감을 위한 맞춤형 차폐재 설계에 관한 연구

  • Kang, Sang-Sik (Dept. of Radiological Science, International University of Korea) ;
  • Kim, Kyo-Tae (Dept. of Hybrid Medicine and Science, Inje University) ;
  • Noh, Si-Cheol (Dept. of Radiological Science, International University of Korea) ;
  • Jung, Bong-Jae (Dept. of Radiological Science, International University of Korea) ;
  • Park, Ji-Koon (Dept. of Radiological Science, International University of Korea)
  • 강상식 (한국국제대학교 방사선학과) ;
  • 김교태 (인제대학교 융합의과학) ;
  • 노시철 (한국국제대학교 방사선학과) ;
  • 정봉재 (한국국제대학교 방사선학과) ;
  • 박지군 (한국국제대학교 방사선학과)
  • Received : 2014.08.28
  • Accepted : 2014.10.25
  • Published : 2014.10.30

Abstract

The fact is that in addition to an increase in social needs that must be managed systematically unnecessary exposure in the field of medical Recent important that the shield has emerged. However, products that are now in practical use, are not subdivided as compared to various medical radiology. Therefore, in the present study, we tried to present with the help of Monte Carlo simulation the structure of the shielding material that has been optimized. Simulated estimation result, the energy of the mammography for (30 kVp) spectrum, check the shielding rate of 90% or more $30{\mu}mPb$, at 2 mmAl case of shielding material of a single, at design time of 1 mmAl and 0.03 mmPb a double shield structure it is determined that more efficient. Also, check the blocking rate of 90% or more $340{\mu}mPb$, at 30 mmAl energy captured general in (80 kVp) spectra, it is considered that a double shield structure, design 1 mmAl and 0.3 mmPb is useful. These results, be used as basic material for the development of commercialization customized products for dose reduction is expected.

최근 의료 분야에서의 불필요한 피폭을 체계적으로 관리해야 한다는 사회적 요구 증가와 더불어 차폐의 중요성이 대두되고 있는 실정이다. 하지만 현재 상용화된 제품은 다양한 의료방사선 분야보다 세분되어 있지 않다. 이에 본 연구에서는 최적화된 차폐재의 구조를 몬테카를로 시뮬레이션을 활용하여 제시하고자 하였다. 모의 추정 결과, 유방촬영 에너지(30 kVp) 스펙트럼에 대하여 단일 차폐재의 경우 $30{\mu}mPb$, 2 mmAl에서 90% 이상의 차폐율을 확인하였고, 이중차폐 구조에서는 0.03 mmPb와 1 mmAl의 설계 시 효율적인 것으로 판단되었다. 또한, 일반촬영 에너지(80 kVp) 스펙트럼에 대해서는 $340{\mu}mPb$, 30 mmAl에서 90% 이상의 차폐율을 확인하였으며, 이중차폐 구조에서는 0.3 mmPb와 1 mmAl의 설계가 유용할 것으로 사료된다. 이러한 결과는 향후 피폭저감을 위한 맞춤형 상용화 제품 개발에 대한 기초자료로 활용될 수 있을 것으로 기대된다.

Keywords

References

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