Hi Jesper, I tried both betted and non-betted brains, and they gave me similar results. I have uploaded the non-betted brains to the fsl server, The six-digit reference number for the upload session is 286348. Best, Hugh On Tue, Jun 19, 2012 at 5:10 AM, Jesper Andersson <[log in to unmask]> wrote: > > Hi again, > > what immediately strikes me is that the brains you sent me are both betted. Fnirt tends to perform better when run on non-betted data. Can you please let me know what data you used for running it? > > Jesper > > On 18 Jun 2012, at 21:35, Hugh Wang wrote: > > > Thank you very much, Jesper! > > > > I have uploaded the scans, masks and fnirt log file to the server. > > > > The six-digit reference number for this upload session is 100111 > > > > Best, > > Hugh > >