Compared with FBP and Algebraic iterative reconstruction,COSEM is helpful to improve the image quality of SPECT, positron accord circuitry and PET greatly.

• COSEM和滤波反投影(FBP)及代数迭代重建方法比较 ,能明显改进SPECT、正电子符合线路及PET图像的质量 ,特别是正电子符合线路和PET图像的质量。