Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Computer Simulation for Effects of Scintillator and Parallel Hole Collimator on Gamma Probe Imaging

섬광체와 평행구멍조준기가 감마프로브 영상에 미치는 영향에 관한 컴퓨터 시뮬레이션

  • Bong, Jeong-Gyun (Research Institute of Radiological Science, Yonsei Univ., Department of Physis, Kyonggi Univ.) ;
  • Kim, Hui-Jung (Research Institute of Radiological Science, Yonsei Univ., Department of Diagnostic Radiology, Yonsei Univ. College of Medicine) ;
  • Lee, Jong-Du (Research Institute of Radiological Science, Yonsei Univ., Department of Diagnostic Radiology, Yonsei Univ. College of Medicine) ;
  • Gwon, Su-Il (Department of Physics, Kyonggi Univ.)
  • 봉정균 (연세대학교 방사선의과학연구소, 경기대학교 물리학과) ;
  • 김희중 (연세대학교 방사선의과학연구소, 연세대학교 의과대학 진단방사선과학교실) ;
  • 이종두 (연세대학교 방사선의과학연구소, 연세대학교 의과대학 진단방사선과학교실) ;
  • 권수일 (경기대학교 물리학과)
  • Published : 1998.12.01
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Abstract

The purpose of this study was to investigate the effects of scintillator and collimator parameters that tradeoff between system sensitivity and spatial resolution. The parameters simulated using Monte Carlo program were scintillator thickness, colimator hole shape, septal thickness, and hole length. The results show that the sensitivity increases exponentially upto about 1 cm of scintillator thickness as the thickness increases. However the sensitivity is almost constant when the scintiallator is thicker than about 1 cm. The simulation of collimator hole shape shows that the hexagonal hole gives the best spatial resolution for the same system sensitivity. The system statical resolution is improved, as both collimator septal thickness and hole length increase, however that system sensitivity is rapidly decreased. In conclusion, The optimization of scintillator and collimator parameters using monte carlo simulation may be useful to develop a high-resolution miniature gamma probe.

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