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Everything in your job looks fine. I think the problem may be my fault. I've just been looking at a related problem, which was fixed by replacing spm8/toolbox/DARTEL/spm_dartel_smooth.m by the attached file. This will be included among the next set of updates. For additional robustness, you may wish to try out the new segmentation approach for generating the DARTEL "imported" data. The attached try_this.mat file may give you some pointers). Also, there is now an option to have your results in MNI space (again, see the try_this.mat file). Note that this batch job would need the locations of the tissue probability maps used by "New Segment" to be changed. Best regards, -John On Friday 08 May 2009 17:14, Bahri wrote: > Dear All, > > I'm preparing data processing batch for VBM analysis of AD data with > Dartel (SPM8). Before running this batch on all data, I tested it only > on three subjects in order to see if everything go well. The results of > this test shown that Template_n.nii and u_rc….._Template.nii files are > empty (black image). Can this result from the use of a limited number of > images? The batch is attached to this mail. I will be very grateful if > any one could check if everything seems to be ok. Any advices or/and > recommendations on this topic (VBM analysis) are welcome. > > Thanks in advance, > > Mohamed