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Dear SPM Users, When I perform realign and unwrap, I also select the reslice (unwrap) option. However, I realized that the output volumes are only affixed u* not an ru*. And, when I would like to view the output volumes with MRIcro, it gives a warning : " This image includes rotation transformation. You should reslice this data before attempting overlay..."??? As a result I get the error "images don't all have same orientation & voxel size " when I use spm_read_vols to read these images. Am I missing something? Or is there another reslicing I need to perform? My second question is that when I do realign and unwrap, I lose my first axial slice (i.e. first slice of uvol*.nii is zeros, or mostly zeros). The effect is worse if I register to first instead of register to mean. Can it be because of high axial motion? I am attaching an example vol.nii and uvol.nii and the motion paramters figure for those who would like to inspect and help (u*.nii is registered to mean). I really would appreciate. Thanks, Uenal -..---------------------------------------------------------------------------- Unal Sakoglu, PhD MRI scientist, post-doctoral researcher Biomedical Research and Integrative NeuroImaging (BRaIN) Center, Magnetic Resonance Imaging Core Department of Neurology University of New Mexico 1101 Yale Blvd. NE, MSC 11 6040 Albuquerque NM 87131 e-mail: [log in to unmask] tel : (505)272-5082 / 710-7645 fax : (505)272-8306 URL : www.unm.edu/~sakoglu -------------------------------------------------------------------------------