[Freesurfer] nii -> mgz conversion inaccuracy; slice shifted.

2012-11-10 Thread Uri Hasson
Dear Freesurfer experts, I'm converting a batch of nifti files to start a FS pipeline. There is 1 structural image per participant. The initial 'reconall -i' step does not give any errors. But, looking at the 'mri/orig/001.mgz' I notice for 1 participant what appears to be an imperfect conversion.

Re: [Freesurfer] ASCII .curv format viewing problem

2012-11-10 Thread Sourena Soheili-Nezhad
Hi Bruce Thanks, it worked. A follow-up question: I am performing multivariate analysis of the jacobian to cluser co-variating cortical patches which shrink/expand together. So, is it correct that if I omit/decrease the jacobian penalty term in the spherical registration step then I will get more

Re: [Freesurfer] Qdec - longitudinal. File missing

2012-11-10 Thread Martin Reuter
Hi Alex. Take a look at the wiki page: http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/LongitudinalTutorial you need to create a .Qdecrc file in the qdec directory to tell qdec about the filenames with the .long in it: Also QDEC will not know about our new files (e.g. lh.long.thickness-spc

Re: [Freesurfer] nii -> mgz conversion inaccuracy; slice shifted.

2012-11-10 Thread Bruce Fischl
Hi Uri, is there some other problem? I suspect that if you displayed the nifti in tkmedit it would look the same. We center the coords and reslice to coronal to display things in a standard location/orientation. cheers Bruce On Sat, 10 Nov 2012, Uri Hasson wrote: > Dear Freesurfer experts,

Re: [Freesurfer] ASCII .curv format viewing problem

2012-11-10 Thread Bruce Fischl
Hi Sourena yes, that is true. If you are doing a jacobian analysis you probably want to either turn the metric preservation term all the way up (or just terminate the warp after the rigid rotational alignment) and analyze the curvature, or all the way down so that everything is in the jacobian.