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

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
권호 표지

The Study on Quantum Efficiency of $CaWO_4$ Screen with Diagnostic X-ray

진단 X선에 대한 $CaWO_4$ 증감지의 양자효율 연구

  • Park, Ji-Koon (Department of Biomedical Engineering of Inje University) ;
  • Kang, Sang-Sik (Department of Biomedical Engineering of Inje University) ;
  • Jang, Gi-Won (Department of Biomedical Engineering of Inje University) ;
  • Lee, Hung-Won (Medical Imaging Research center of Inje University) ;
  • Nam, Sang-Hee (Medical Imaging Research center of Inje University)
  • 박지군 (인제대학교 의용공학과) ;
  • 강상식 (인제대학교 의용공학과) ;
  • 장기원 (인제대학교 의용공학과) ;
  • 이형원 (인제대학교 의료영상연구소) ;
  • 남상희 (인제대학교 의료영상연구소)
  • Published : 2002.11.07
Download PDF
⟨ Previous Next ⟩

Abstract

Lately, intensifying screen of the $CaWO_4$ is used to medical treatment and diagnosis of the image. In this paper, we investigated transmission fraction and mass attenuation coefficient of $CaWO_4$ screen about diagnostic x-ray of low energy using MCNP 4C code. Experimentally, for 0.9 mm-$CaWO_4$ screen, the absorbable rate of diagnostic x-ray is more than 95%. according to kVp, the experimental value of mass attenuation coefficient is in a1most agreement with an corrected estimate value of MCNP and the deviation of experimental values is less than ${\pm}7%$. Using the MCNP code through this paper, we can make an estimate of signal and design for construction of the CaWO4/a-Se based digital x-ray image detector and make a good use of the foundation data for development of other materials.

Keywords