数字化γ相机的实时能量校正

Real-time energy correction in digital gamma camera

介绍了数字化γ相机能量校正表的制作原理,阐述了一种实时能量校正方法,它根据采集事件的位置信息查询能量校正表确定校正单元,取出相邻4个校正单元中的校正量,然后利用双线性插值法得出相应的能量校正系数。最后通过软件编程实现了对采集事件的实时能量校正。

AThis paper introduces the generating principle of energy correction table for digital gamma camera and elaborates a method for real-time energy correction. According to the position information of the collected events, correction cells are determined. With the correction value in four adjacent correction cells, coefficient of energy correction is worked out through bilinear interpolation. Finally, real-time energy correction for the collected events is achieved through software programming.