Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Multi-layer design of Hybrid method for digital X-ray imaging

디지털 X-ray imaging을 위한 Hybrid 방식의 다층구조 설계

  • Cho, Sung-Ho (Department of Biomedical Engineering of Inje University) ;
  • Park, Ji-Koon (Department of Biomedical Engineering of Inje University) ;
  • Lee, Dong-Gil (Department of Biomedical Engineering of Inje University) ;
  • Kim, Dae-Hwan (Department of Biomedical Engineering of Inje University) ;
  • Kim, Jae-Hyung (Medical Imaging Research center of Inje University) ;
  • Nam, Sang-Hee (Medical Imaging Research center of Inje University)
  • 조성호 (인제대학교 의용공학과) ;
  • 박지군 (인제대학교 의용공학과) ;
  • 이동길 (인제대학교 의용공학과) ;
  • 김대환 (인제대학교 의용공학과) ;
  • 김재형 (인제대학교 의료영상연구소) ;
  • 남상희 (인제대학교 의료영상연구소)
  • Published : 2003.05.16
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Abstract

In recent years, there has been keen interest in developing flat panel detectors for all modalities of radiology, including gerneral radiology, fluoroscopy, electronic portal imaging, and mammography. In this paper, we report the new hybrid x-ray detector consisted of ZnS(Ag) photoemission layer and a-Se photoconductor layer to resolve problem of conventional x-ray detector such as the direct detector and the indirect detector. To design the structure of ZnS(Ag)/a-Se detector, the penetrated energy spectrum and absorption fraction was estimated using MCNP 4C code. Also, we carried out the experiment to demonstrate the result of MCNP 4C code. Experimental results showed that the absorption fraction of $500{\mu}m$-ZnS(Ag) film was above 87%, 75% at 60 and 80 kVp. As a results, we can determined the thickness of suitable phosphor and the thickness of photoconductor.

Keywords