摘要
运用自制的单线源和多线源，对ＰＥＴ的线性度进行了三维方向的测量，测量中采用了求线分布函数ＬＳＦ峰位相对理想直线偏差的方法，为提高测量精度，对有关函数的峰位进行了三次样条函数插值校正，测量结果较为理想，误差均小于百分之一。
System spatial linearity of PET in our hospital has been tested in three-dimensional direction and the method of calculating the relative error of peak positions against perfect straighthas been used. Some peak positions of function have been corrected with insertion value of thirdorder sptline function in order to obtain high precision, and satisfactory results have been obtained.(
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
1994年第4期218-221,共4页
Nuclear Electronics & Detection Technology
关键词
正电子发射
断层摄影术
线性度
Positron emission tomography Line spread function System spatial linearity Third order spline function )
