Hi,professor, I am a newer.,Now I want to study the algorithm of smoothing.In the articles that I have read,,they only tell me that the process is use the Gassian kerner,and the voxel intesity is the average of the near 26 voxel intensity.But I want the real algoritnm of smoothing. thanks --------------------------------- ΡΕ»’ΣΚΟ䣬Δϊ΅ΔΦΥΙϊΣΚΟ䣑