The aim of this study was to evaluate the influence of different entrance surface treatments of the scintillator on the intrinsic spatial resolution of a scintillation camera.The primary scintillation light reflection...The aim of this study was to evaluate the influence of different entrance surface treatments of the scintillator on the intrinsic spatial resolution of a scintillation camera.The primary scintillation light reflection on the entrance surface of a scintillator may be affected by the optical coating of the entrance surface,resulting in either spatial resolution or system detection efficiency degradation.A Monte Carlo simulation model,based on Geant4 codes,was developed in order to study the scintillation light transportation in the scintillator with an entrance surface of various optical coatings.The results demonstrated that the application of retro-reflector on entrance surface of the scintillation crystal can significantly improve the intrinsic spatial resolution of the scintillation camera.The physical mechanism of the improvement of spatial resolution is explored.展开更多
文摘The aim of this study was to evaluate the influence of different entrance surface treatments of the scintillator on the intrinsic spatial resolution of a scintillation camera.The primary scintillation light reflection on the entrance surface of a scintillator may be affected by the optical coating of the entrance surface,resulting in either spatial resolution or system detection efficiency degradation.A Monte Carlo simulation model,based on Geant4 codes,was developed in order to study the scintillation light transportation in the scintillator with an entrance surface of various optical coatings.The results demonstrated that the application of retro-reflector on entrance surface of the scintillation crystal can significantly improve the intrinsic spatial resolution of the scintillation camera.The physical mechanism of the improvement of spatial resolution is explored.
