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Thankyou all for your valuable responses. Both mricro and John Ashburner's solutions work. Though John Ashburner's m-file has the benefit of reslicing the voxels (since ours are non-isotropic, that prevents distortion in mrGray). I suspect that if I spent a little with MRIcro, I could compensate as well, but I have to go back to unfolding the hippocampus for now. Again, Thanks to all of you for your prompt and valuable responses to my cries for help. Dianne Patterson CNL University of Arizona -- Original Message -- >Hi Dianne > >We change the orientation of our sagital images using MRIcro. After loading >the volume into MRIcro, go to "Save as... [rotate/clip...]" and select the >Sagital -right or -left Format option. Use "Preview" to check the new >orientation, and then "Save ...". Be careful with you left and right. > >Regards, >-Paul > >>Dear All, >>I have been using SPM and MRIcro for a few months now...but I am >encountering >>a problem which I am hoping someone can help with: >>Our 3d anatomical images are in sagittal orientation...this means they >are >>a mess when displayed in spm...which thinks the sagittal is the axial etc. >>etc. In spm, we have changed pitch by 90 degrees and roll by 90 degrees >>and then doing a flip in resize (x)...and thus we seem to have gotten the >>image into the correct orientation. >> >>Alas, these changes are recorded in a mat file which other programs (like >>MRIcro and mrGray) do not read. Does anyone know of any way to make the >>changes directly to the images, rather than recording them in the mat file? >> >>Alas, I am no matlab programmer. >> >>Thanks in advance, >> >>Dianne Patterson, Ph.D. >>[log in to unmask] >>CNL >>University of Arizona >