Hi All, I guess this should be an easy one. I have a 2x2x2mm MRI image that I would like to smooth to 7mm using mincblur. Should I use: mincblur -fwhm 7 in_image.mnc out_image OR should I divide the 7mm by 2 in order to pass mincblur the voxel size of the fwhm, i.e.: mincblur -fwhm 3.5 in_image.mnc out_image My question is, does mincblur accept voxel size or mm for the fwhm parameters? Thanks, Paul