One more thing that might be useful: for my current dataset, everything was processed in FreeSurfer 4.3.1.
Thank you, Jeff On Mon, Mar 7, 2011 at 12:41 PM, Jeff Sadino <jsadino.que...@gmail.com>wrote: > Hello, > > I have a question about the effects of FreeSurfer's resampling algorithms. > The way our pipeline goes is that we convert our DICOM images into .nii.gz > format using FSL tools. One of the commands we use is FSLCPGEOM. I was > never sure why, but our script would always break without it. Looking into > it in more detail now, I see that it is replacing the voxel size information > in the Nifti header with the voxel size in the template that FSLCPGEOM is > copying from. This is causing all of our data to show isovolumetric 1x1x1 > information in the header, even if the voxels really are non-isovolumetric. > I have been having a difficult time combining FreeSurfer results across our > different studies and I am wondering if this might be the reason why. All > of our studies have voxels acquired near 1x1x1 isovolumetric, usually no > more than .3mm away in any direction. What would the effect be of pushing > data through the FreeSurfer reconstruction pipeline that is not really 1x1x1 > isovolumetric? > > Thank you, > Jeff Sadino >
_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
