Why can't it be used? If it is in a proper NIfTI format, then there shouldn't be any real issues. If there is a problem, then it must be a bug in need of fixing. Best regards, -John On Friday 19 September 2008 11:38, kamran kazemi wrote: > Dear SPMers > I have an atlas which is coded RPI and I want to use it for segmentation in > SPM, But it seems that i cann't. so, i would like to know is it possiblity > to use this atlas in SPM? > Best > Kamran