The --mni152reg flag is only appropriate if the mov file is in the 2mm
mni152 space. The inclusion of fsaverage as the source subject indicates
some ambiguity about this
On 4/3/17 1:56 PM, Rita Elena Loiotile wrote:
Hi,
I'm trying to compare analyses that I've done entirely on the surface
to analyses I've done in the volume. I'm comparing the analyses by
projecting the volume analyses to the surface (HCP's 32k_fs_LR).
The commands I'm using are:
mri_vol2surf --mov $niftiFile --mni152reg --hemi ${hemi}
--projfrac-max 0 1 0.2 --o ${giftiFile}.$hemi.gii;
mri_surf2surf --srcsubject fsaverage --srcsurfval
${giftiFile}.$hemi.gii --trgsubject 32k_fs_LR --trgsurfval
${giftiFile}.$hemi.gii --hemi ${hemi};It seems that the FSL volumes
look identical to the surface analysis, when mapped. (Our surface
analysis is mainly FSL-based, so this makes sense.)
The SPM mapping, however, looks very odd. It isn't just that the
intensity differs, but the localization of high intensity areas also
varies. It seems that everything is shifted a bit superior and,
possibly, posterior to the true location (as seen on the surface
analysis).
I'm wondering if I'm doing anything obviously wrong in my command
usage. The brains were normalized to the MNI ICBM 152 template in SPM.
I *think* it's suitable to use the -mni152reg flag in the command.
I can attach pictures of the comparison if you'd like.
Thanks in advance,
Rita
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