Re: [Freesurfer] colin27 skullstrip problem

2009-12-01 Thread Pedro Paulo de Magalhães Oliveira Junior
Also the ch2 dataset that comes with MRICro suffers from the same problem. It's the averaging of several acquisition from one brain. Is it possible to infer that too many acquisitions is worse than one acquisition? -- PPJ 2009/11/30 Bruce Fischl > Hi Mishkin, > > yes, I generates surfaces for

Re: [Freesurfer] recon-all -qcache question

2009-12-01 Thread Bruce Fischl
no, it will take far less (30 minutes or so I think) On Mon, 30 Nov 2009, Guang Zeng wrote: > > Hi, there, > > I have 60 subjects which have been FS analyzed without the flag -qcache. > Now, I wan to do group analysis using QDEC. > > I need run recon-all -s subjectid -qcache for each of my subjec

Re: [Freesurfer] colin27 skullstrip problem

2009-12-01 Thread Bruce Fischl
yes, we have found that with 3T and >=12 channels one is probably better than 2. Although having 2 is good for other reasons On Tue, 1 Dec 2009, Pedro Paulo de Magalhães Oliveira Junior wrote: Also the ch2 dataset that comes with MRICro suffers from the same problem. It's the averaging of seve

[Freesurfer] Problem with mri_aparc2aseg

2009-12-01 Thread Jürgen Hänggi
Dear FS experts I run recon-all -long on 12 subjects (3-4 time points each) and there is a problem with mri_aparc2aseg. The processor is running, but the the number of labeling slices does not increase (hangs by 4 slices since hours). The other time points of this subject as well as the cross-sec

Re: [Freesurfer] Problem with mri_aparc2aseg

2009-12-01 Thread Douglas N Greve
Have you looked at the surfaces for this time poing? Does the recon for this time point otherwise look ok? doug Jürgen Hänggi wrote: > Dear FS experts > > I run recon-all -long on 12 subjects (3-4 time points each) and there is a > problem with mri_aparc2aseg. The processor is running, but the t

[Freesurfer] (no subject)

2009-12-01 Thread Guang Zeng
Hi, there, I have made our own template using 20 subjects follwoing the instruction in FreeSurfer WIKI. (http://surfer.nmr.mgh.harvard.edu/fswiki/SurfaceRegAndTemplates). I have a quesition now, Does the quality of the new template depends on the first subject I picked to built the tempalte

Re: [Freesurfer] (no subject)

2009-12-01 Thread Bruce Fischl
Hi Guang, I think it probably does make a difference, but we haven't quantified how much. The initial round of registrations are pretty rigid, so it may not be that big an effect, but Thomas Yeo (ccd) may have a different opinion. cheers Bruce On Tue, 1 Dec 2009, Guang Zeng wrote: > > Hi, the

[Freesurfer] Incorrect hemispheres

2009-12-01 Thread Mayuresh Korgaonkar
Hello Freesurfer authors, I have processed a few datasets without realising that the hemispheric orientation was provided incorrectly i.e the labelled left hemisphere is actually the right hemisphere. Does this mean all the analysis is incorrect and unusable? What should I do to correct for t