External Email - Use Caution I see and thank you very much. May I know If I could transform the surface-based time series data to volume space, like the space of subcortical data 'fmcpr.odd.sm5.mni305.2mm.nii.gz'? I know I could get the whole brain 3D volume fmri data by changing the subcortical mask in folder 'mri.2mm' to the whole brain mask, but I do not need the part of white matter. See if it is applicable?
Thanks, Lizhi On Tue, 2 Apr 2019 at 17:32, Greve, Douglas N.,Ph.D. <dgr...@mgh.harvard.edu> wrote: > > > On 4/2/19 4:23 PM, Zhi Li wrote: > > > > External Email - Use Caution > > > > Dear Freesurfer experts, > > > > I would like to transform the task-based surface data to volume. May I > > know if it is applicable? I tried "mri_surf2vol --o test.nii.gz > > --subject sub002 --so fs/sub002/surf/lh.white > > fMRI/sub002/task/001/fmcpr.odd.sm5.fsaverage.lh.nii.gz", but my system > > frozen. Any suggestions would be appreciated. > You are trying to convert the raw time series data into the anatomical > space. The anat space is 256*256*256. If you have many time points, the > functional volume in the anatomical space is going to be huge. This > would explain why your computer is frozen. Also, the surface fmri data > is on subject fsaverage, not on sub002. > > > > Another problem is that in some individuals I found the RAS > > information of preprocessed surface data of different sessions are not > > identical, that means the "voxel to ras transform" and "ras to voxel > > transform" in fmcpr.odd.sm5.fsaverage.lh.nii.gz are different between > > seesion1 (folder 001) and session2 (folder 002). May I know how this > > happened and will it influence the final result? Should I keep them > > the same? > The vox2ras for surface overlay data is not valid, so ignore it. > > > > Thanks, > > > > LIzhi > > > > > > _______________________________________________ > > Freesurfer mailing list > > Freesurfer@nmr.mgh.harvard.edu > > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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