北京生物医学工程

LYSO闪烁晶体PET探测器设计及位置映射算法研究

Address Mapping Algorithm and the Design of the LYSO Detector in PET

作者：牛珂楠燕辉项士海王军博孙航刘军强梁国栋吴国城尚艺童李甲递康雁

单位：东北大学中荷生物医学与信息工程学院（沈阳110819）

关键词：核医学仿真平台;正电子发射计算机断层;LYSO闪烁晶体;光电倍增管;定位算法

分类号：

出版年·卷·期（页码）：2011·30·5（484-489）

摘要：

目的分析LYSO闪烁晶体内光子的输运特性及正电子发射计算机断层扫描装置(positron emission
tomography,PET)位置映射表的建立方法。方法在Linux fedora操作系统之上成功构建了GATE(geant4
application for tomographic emission)核医学仿真平台，模拟了LYSO闪烁晶体PET探测器内光子输运
过程。并且基于仿真数据，分析了位置映射表。结果成功研制了8×8探测器模块，得到位置映射对照表
。结论基于GATE进行探测器模块设计切实可行，得到的位置映射表对后期实际散点图的建立过程具有重
要指导作用。

Objective To find out an optimized method for constructing scintillation
crystal positron emission tomography(PET) detector,a simulation study of photon
transmission in the LYSO crystal is carried out by using of a nuclear medicine simulation
platform GATE (geant4 application for tomographic emission). Methods Simulation platform of
PET was built employing GATE based on Linux fedora operating system. The transport of gamma
photon in the LYSO crystal detector module was simulated by using GATE. Results The
physical detector module with LYSO crystal coupled with photomultiplier was developed.
Also,the address mapping was obtained by using simulation data. Conclusions It is a
feasible method of constructing PET detector by using GATE. Furthermore,the address mapping
could serve as a valuable guidance for the research of scatter plot.

参考文献：

［1］Casey ME,Nutt R.A multicrystal two dimensional BGO detector system for positron
emission tomography［J］.IEEE Trans Nucl Sci,1986,33:460-463.
［2］刘华锋,鲍超.PET探测器的现状及发展趋势［J］.国内科技,2000（7）:39-41.
［3］万宇宾,胡婵娟,万淑芸.基于GATE/STIR软件包的核医学仿真平台［J］.中国生物医学工程学
报,2007,26(5):752-757.
［4］马天予,祁建敏,周荣,等.基于GATE程序的MicroSPECT成像系统并行化Monte Carlo模拟［J］.清华
大学学报，2007,47(z1):928-932.
［5］刘华锋,叶华俊,鲍超,用于正电子发射断层成像的闪烁晶体［J］.原子能科学技术，2001,35
(5):476-480.
［6］柴培，单保慈.正电子发射断层扫描仪Block探测器晶体位置表的建立［J］.中国科学 E 辑:技术科
学,2009（1）:103-108.
［7］Stonger KA,Johnson MT.Optimal calibration of PET crystal position maps using gaussian
mixture models［J］.IEEE Trans Nucl Sci,2004,51:85-90.
［8］Gonzalez RC,Woods RE,Eddins SL.数字图像处理［M］.北京:电子工业出版社,2009.
［9］Buvat I,Castiglioni I.Monte Carlo simulations in SPECT and PET［J］.Nucl
Med,2002,46:48-61.
［10］Rogers JG,Taylor AJ,Rahimit MF. An improved multicrystal 2-D BGO detector for PET［J
］.IEEE Trans Nucl Sci,1992,39(4):1063-1068.

服务与反馈：

【文章下载】【加入收藏】

提示：您还未登录，请登录！点此登录