Development of a Small Gamma Camera Using NaI(Tl)-PSPMT or Breast Imaging

NaI(Tl) 섬광결정과 위치민감형 광전자증배관을 이용한 유방암 진단용 소형 감마카메라 개발

  • Kim, J.H. (Department of Physics, Myongji University) ;
  • Choi, Y. (Department of Nuclear Medicine, Samsung Seoul Hospital Samsung Biomedical Research Institute, Clinical Research Center) ;
  • Kwon, H.S. (Department of Computer Engineering, Konkuk University) ;
  • Kim, H.J. (Department of Radiology, Yonsei University) ;
  • Kim, S.E. (Department of Nuclear Medicine, Samsung Seoul Hospital Samsung Biomedical Research Institute, Clinical Research Center) ;
  • Choe, Y.S. (Department of Nuclear Medicine, Samsung Seoul Hospital Samsung Biomedical Research Institute, Clinical Research Center) ;
  • Kim, M.H. (Department of Computer Engineering, Konkuk University) ;
  • Joo, K.S. (Department of Physics, Myongji University) ;
  • Kim, B.T. (Department of Nuclear Medicine, Samsung Seoul Hospital Samsung Biomedical Research Institute, Clinical Research Center)
  • 김종호 (명지대학교 물리학과) ;
  • 최용 (삼성서울병원 핵의학과, 삼성생명과학연구소 임상의학연구센터) ;
  • 권홍성 (건국대학교 컴퓨터공학과) ;
  • 김희중 (연세대학교 진단방사선과학교실) ;
  • 김상은 (삼성서울병원 핵의학과, 삼성생명과학연구소 임상의학연구센터) ;
  • 최연성 (삼성서울병원 핵의학과, 삼성생명과학연구소 임상의학연구센터) ;
  • 김문희 (건국대학교 컴퓨터공학과) ;
  • 주관식 (명지대학교 물리학과) ;
  • 김병태 (삼성서울병원 핵의학과, 삼성생명과학연구소 임상의학연구센터)
  • Published : 1997.11.28

Abstract

We are developing a small gamma camera or imaging malignant breast tumors. The small scintillation camera system consists of NaI(Tl) crystal ($60\;{\times}\;60\;{\times}\;6\;mm^3$) coupled to position sensitive photomultiplier tube (PSPMT), nuclear instrument module (NIM), analog to digital converter (ADC), and personal computer. High quality flood source image and hole mask image were obtained using the gamma camera developed in this study. Breast phantom containing $2{\sim}7\;mm$ diameter spheres was successfully imaged with parallel hole collimator. The obtained image displayed accurate activity distribution over the imaging field of view. Linearity and uniformity correction algorithms are being developed. It is believed that the developed small gamma camera could be useful or detection of malignant breast cancer.

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