断层屏蔽SPECT角度函数的讨论  

Angle Function of Slice Collimator SPECT

作　　者：马加一[1] 陈步新[1] 李佳懿[1] 赵经武[1] 

机构地区：[1]南京大学物理系,南京210093

出　　处：《核电子学与探测技术》2009年第6期1277-1281,共5页Nuclear Electronics & Detection Technology

摘　　要：断层屏蔽SPECT中角度函数的引入,使探测器收集到的粒子计数在不同的角度表现出有极大值,该极大值随点源的位置而变化,它包含了丰富的信息。论文在点源/均匀圆柱体水模型下推导了极大值出现的方程,并用数值计算和蒙特卡洛模拟进行了分析和讨论。Introducing the angle function to slice collimator SPECT, It is found that the counts of the detectors achieve the maximum value in different angles, which change with the position of the point source and contain a wealth of information. In the paper, point source/uniform water cylinder model is used to derive the equation of the maximum value, with a further analyzing and discussion using the numerical calculation and Monte Carlo simulation.

关 键 词：断层屏蔽 角度函数 

分 类 号：R445.5[医药卫生—影像医学与核医学]