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Feasibility study of insertable miniature x-ray source for dental imaging

치과 영상용 삽입형 초소형 X선 튜브의 가능성 연구

  • Cho, Sung-Ho (Radiation Oncology Ewha Womans University Mokdong Hospital) ;
  • Kim, So-Yeong (Radiation Oncology Ewha Womans University Mokdong Hospital) ;
  • An, So-Hyun (Radiation Oncology Ewha Womans University Mokdong Hospital) ;
  • Lim, Soo-Mee (Radiation Oncology Ewha Womans University Mokdong Hospital) ;
  • Lee, Re-Na (Radiation Oncology Ewha Womans University Mokdong Hospital)
  • 조성호 (이화여자대학교 목동병원 방사선 종양학과) ;
  • 김소영 (이화여자대학교 목동병원 방사선 종양학과) ;
  • 안소현 (이화여자대학교 목동병원 방사선 종양학과) ;
  • 임수미 (이화여자대학교 목동병원 방사선 종양학과) ;
  • 이레나 (이화여자대학교 목동병원 방사선 종양학과)
  • Received : 2011.11.07
  • Accepted : 2012.02.21
  • Published : 2012.02.28

Abstract

Conventional periphery radiography system has a various problem such as patient dose and the pain of X-ray examination. In this paper, to solve these problems, we suggested insertional miniature x-ray system and we verified the feasibility of this system. First, we performed the Geant4 x-ray simulation to design x-ray collimator and filter to use miniature x-ray tube and we decided optimized thickness of filter and collimator. Also, we measured x-ray spectrum using CdTe detector and PX4 module to verify simulation results. Also, we acquired teeth image of fabricated phantom using conventional dental x-ray and prosed miniature x-ray system. As a results, our system has good image quality as compared to those of conventional systems. Our evaluation of the proposed system indicates that it can be potentially very useful for dental imaging.

기존 구내 치근단 촬영용 장치는 환자 피폭선량, 촬영시 고통 등의 문제점을 지니고 있다. 본 연구에서는 이러한 문제점을 해결하기 위한 신개념의 삽입형 초소형 X선 시스템의 가능성을 검증하였다. 먼저 초소형 X선 튜브에 사용될 콜리메이터와 필터를 설계하기 위하여 Geant4를 이용하여 최적의 콜리메이터 두께와 필터 두께를 결정하였으며 CdTe 검출기와 PX4 모듈을 이용하여 결정된 두께에서의 X선 스펙트럼을 확인하였다. 또한 기존 상용화된 치근단 촬영장치와 XOFT사의 초소형 X선 튜브를 이용하여 제작된 치아 팬텀에 대한 영상을 획득하였다. 그 결과 제안된 신개념의 삽입형 초소형 X선 시스템은 기존 시스템과 유사한 영상의 질을 나타내었다. 이는 향후 치근단 촬영용 장치를 비롯하여 다양한 응용부위에 활용할 수 있음을 나타낸다.

Keywords

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