Re: [Freesurfer] preproc-sess registration problem

2011-08-16 Thread Douglas N Greve
Hi Tapsya, If you want to supply a registration to bbregister, then use --init-reg (and don't use --init-fsl). The xopts should give you the same result as the first command. doug tap...@nmr.mgh.harvard.edu wrote: > Hi Doug, > > As mentioned below (by Dr. Tommi), bbregister with the flag --t1 do

Re: [Freesurfer] preproc-sess registration problem

2011-08-16 Thread tapsya
Hi Doug, As mentioned below (by Dr. Tommi), bbregister with the flag --t1 does provide better results. i.e. >>bbregister --init-fsl --s avml07 --bold --mov bold/template.nii.gz --reg bold/register.dof6.dat --init-reg-out bold/init.register.dof6.dat --t1 However, supplying register.dat (from old

Re: [Freesurfer] preproc-sess registration problem

2011-08-16 Thread Douglas N Greve
That should work, but it should not register anyway (unless the raw data or template change). doug r...@nmr.mgh.harvard.edu wrote: > Hi Doug, > > You are absolutely right - I should have noticed the T1 warning in the > bbregister logs. I guess funny things can happen when scanning with a > short

Re: [Freesurfer] preproc-sess registration problem

2011-08-16 Thread raij
Hi Doug, You are absolutely right - I should have noticed the T1 warning in the bbregister logs. I guess funny things can happen when scanning with a short (1.15 sec) TR without fat suppression (also this was Trio before the Tim upgrade and multichannel arrays). We tried bbregister with t1 weight

Re: [Freesurfer] preproc-sess registration problem

2011-08-16 Thread Douglas N Greve
wow, that's interesting. Your data is actually T1 weighted! There are a couple of things you can do. First, you can copy your register.dat over the register.dof6.dat. An alternative is to run register-sess (bbregister) with t1 weighting. You can do this by creating a file with the line "--t1" i

[Freesurfer] preproc-sess registration problem

2011-08-14 Thread raij
Hi Doug, We have an old EPI data set where automatic (preproc-sess) or bbregister with any init type give a bad result. Hence, we are attempting to use a manual register.dat file instead. However, we must be doing something wrong, because changing preproc-sess to use our manual register.dat (done