%0 Journal Article
%T Monte-Carlo Simulation of a Small Gamma Camera Using Fibers and YAP Scintillation Crystal<br>采用光纤和YAP晶体的小型γ相机的蒙特卡罗模拟
%A Zhu Jie
%A Liu Cheng
%A Wang Zhaomin
%A <br>祝杰
%A 刘成
%A 汪兆民
%J 光子学报
%D 2006
%I 
%X Based on the production and transportation of the fluorescence in wavelength-shifting fibers (WSFs) coupled to YAP scintillation crystal,a simulation model has been setup using the GEANT4 codes for a small gamma camera with WSFs coupled to a YAP scintillation crystal. An advantage of this technique over direct readout with a position-sensitive photo-sensor is small amount of readout channel could be used for the same image area. Simulation results show that at least 15 photons on average for 59.5 keV gamma ray (241Am). A spatial resolution of 1.28 mm FWHM is obtained when silicone grease is used to couple to the fibers to the crystal. The factors affecting the number of photons and the spatial resolution are discussed.
%K Monte-Carlo simulation
%K WSF
%K Spatial resolution<br>蒙特卡罗模拟
%K 波长位移光纤
%K 空间分辨率
%K Monte-Carlo
%K simulation
%K WSF
%K Spatial
%K resolution
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=90ED236D6CEB9F17&yid=37904DC365DD7266&vid=6209D9E8050195F5&iid=F3090AE9B60B7ED1&sid=B67AA60AE93E3CE8&eid=4C25EB18BC5AA509&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=7