锗酸铋阵列探测器用于中子激发发射计算机断层扫描成像  

Neutron stimulated emission computed tomography using bismuth germanium oxide array

作　　者：唐世彪[1] 黄环[1] 阴泽杰[1] 

机构地区：[1]中国科学技术大学近代物理系,合肥230026

出　　处：《强激光与粒子束》2008年第3期501-504,共4页High Power Laser and Particle Beams

基　　金：中国科学技术大学研究生创新基金资助课题(KD2006009)

摘　　要：中子激发发射计算机断层扫描成像对探测器有着较高的要求,为了探讨利用传统阵列探测器实现其应用的可行性,利用模拟的方法给出了锗酸铋(BGO)晶体阵列探测器的基本性能。对高能光子在单根BGO晶体中的能谱进行了分析,提出叠加相邻晶体信号以提高能量分辨率的修正方法。结果表明:此方法能够很大程度上优化输出能谱,并能够得到较好的空间分辨率。There are special demands of detector for neutron stimulated emission computed tomography （NSECT）. To discuss the possible application in NSECT, the performance of traditional array detector was presented through simulation. A correction method of summing additional signals from adjacent crystals was proposed based on the spectrum of single bismuth germanium oxide （BGO）. The spectrum with correction becomes much better than previous one, and the spatial resolution obtained is also be appropriate.

关 键 词：中子成像 计算机断层扫描 锗酸铋晶体 能谱 空间分辨率 

分 类 号：TN25[电子电信—物理电子学] O571.33[理学—粒子物理与原子核物理]