Hi all,
I am interested in projecting my functional connectivity z map to the
cortical surface. I attempted to use mri_vol2surf but received a warning
message (see command and output below) indicating that the voxel resolution
in the source volume doesn't match the registration file. Perhaps as a
result of this, when I attempt to load the resulting .mgh file in tksurfer,
nothing appears on the cortical surface image. Any idea what went wrong?
Thanks in advance,
Kevin
Here's the my command and output:
mri_vol2surf --mov N89_L_WholeAmyMask_g7_zfrm_avg.nii.gz --reg
$FREESURFER_HOME/average/mni152.register.dat --hemi lh --trgsubject
fsaverage --out lh.L_WholeAmy_buckner_YC.mgh --projfrac 1 --surf-fwhm 4
srcvol = N89_L_WholeAmyMask_g7_zfrm_avg.nii.gz
srcreg = /usr/local/freesurfer/stable5_0_0/average/mni152.register.dat
srcregold = 0
srcwarp unspecified
surf = white
hemi = lh
trgsubject = fsaverage
surfreg = sphere.reg
ProjFrac = 1
thickness = thickness
reshape = 0
interp = nearest
float2int = round
GetProjMax = 0
INFO: float2int code = 0
Done loading volume
WARNING: the voxel resolution in the source volume (2,2,2) differs
from that listed in the registration file (1,1,1)
Reading surface /space/sake/3/users/inverse/subjects/fsaverage/surf/lh.white
Done reading source surface
Reading thickness
/space/sake/3/users/inverse/subjects/fsaverage/surf/lh.thickness
Done
Mapping Source Volume onto Source Subject Surface
1 1 1 1
using old
Done mapping volume to surface
Number of source voxels hit = 23569
Surface smoothing by fwhm = 4 (n=12)
Writing to lh.L_WholeAmy_buckner_YC.mgh
Dim: 163842 1 1
--
Kevin Bickart
MD-PhD Student
Department of Anatomy and Neurobiology
Boston University School of Medicine
live UP to it
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