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None that I'm aware of, although I should really check the behaviour of the regularisation used by Dartel, and how this is affected by different voxel sizes. Best regards, -John On 12 November 2010 10:02, Christian Kaufmann <[log in to unmask]> wrote: > Dear John and Christian, > are there any apparent pitfalls to consider when using an isotropic > resolution of 1 mm instead of 1.5 (apart from 'out of memory' problems)? I > resliced ~/spm8/toolbox/Seg/TPM.nii and > ~/spm8/toolbox/vbm8/*IXI550_MNI152.nii with Jimmy Shen's Nifti tools > ( http://www.mathworks.com/matlabcentral/fileexchange/8797 ), and adapted > spm_preproc_write8 to vx = 1. > Thanks! > Christian > > >