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

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

디지털 방사선 적용을 위한 Hybrid 방사선 검출기의 Feasibility 연구

Feasibility study of Hybrid X-ray detecter for Digital X-ray imaging application

  • 최장용 (인제대학교 의료영상연구소) ;
  • 박지군 (인제대학교 의료영상연구소) ;
  • 이채훈 (인제대학교 의료영상연구소) ;
  • 이규홍 (인제대학교 의료영상연구소) ;
  • 최흥국 (인제대학교 의료영상연구소) ;
  • 남상희 (인제대학교 의용공학과)
  • Choi, Jang-Yong (Medical Imaging Research center of Inje University) ;
  • Park, Ji-Koon (Medical Imaging Research center of Inje University) ;
  • Lee, Chae-Hun (Medical Imaging Research center of Inje University) ;
  • Lee, Kyu-Hong (Medical Imaging Research center of Inje University) ;
  • Choi, Heung-Kook (Medical Imaging Research center of Inje University) ;
  • Nam, Sang-Hee (Department of Biomedical Engineering, College of Biomedical Science and Engineering, Inje University)
  • 발행 : 2004.04.24
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초록

In this study, the purpose is to verified the feasibility to develope Hybrid x-ray detector in order to resolve problems of direct and indirect x-ray detectors. The properties of X-ray detector depend on absorption of X-ray, charge generation by x-ray photon, leakage current. In this study, CdS was used as photoconductor, and $Y_2O_2S:Tb$ as x-ray phosphor was formed on CdS in order to embody Hybrid structure. And Screen printing was used to form Muli-layer. Characteristics of this specimen were analyzed by using SEM, and XRD. And Photoluminescence spectrum of $Y_2O_2S:Tb$, leakage current, with respect to applied voltages, output charge with respect to applied voltages, and X-ray sensitivity were measured. Also, linearity with respect to dose was measured. Leakage current was similar with direct digital x-ray detector, but sensitivity of the hybrid structure is much better than the single-layer structure.

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