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Dear Catherine, As far as I know, spm2 assumes that your files are stored (!) in radiological orientation on disk (in this case, the variable defaults.analyze.flip should be set to 1) and displays (!) the same data in neurological orientation. I don't know how MRIcro handles such things, but I guess it displays the images in the same orientation as they are stored on disk. However this does not seem to hold for the overlay->slices option, when viewing results of SPM-statistics. The image-information in the MIP (glassbrain), renderings and sections are in neurological convention, but (for whatever reason) the slices are displayed in radiological convention. I hope this is right and helps, Thilo On Thursday 17 March 2005 20:54, Catherine Fassbender wrote: > Dear spm list > > I have just begun to use spm and am looking at my raw images before I > begin preprocessing. I have been told that spm will open the images as > they are (without flipping them in any direction (r-l, a-p, i-s)). > However, when I open the anatomical images in MRIcro my vitamin > E-right-side-of-the-head-index is on the left and when I open up exactly > the same image in spm it is on the right. Obviously one of these > programs is flipping the images in the left-right direction, although I > have been informed that neither programs do this. Can anybody shed any > light on this for me please? > > Thanking you in advance > Catherine Fassbender -- Thilo Kellermann RWTH Aachen Pauwelstr. 30 52074 Aachen Tel.: +49 (0)241 / 8089977 Fax.: +49 (0)241 / 8082401 E-Mail: [log in to unmask]