Hi Gabriel, this is normal. The volumes listed with aseg.stats have been corrected for partial volume, so it is not as simple as counting up all the voxels. doug
On 11/21/2012 12:36 PM, Gabriel Gonzalez Escamilla wrote: > Dear Freesurfer, > > I'm trying to convert come labels from the aseg.mgz into nifti volumes > > I'm using: > mri_extract_label aseg.mgz # and aseglabel#.nii > where the # is the label as appears on the freesurferColoLUT.txt > and it seems to work perfectly, but the number of voxels does not > match with the number of voxels output in the aseg.stats, is this normal? > they vary from i.e. 2603 in the aseg.stats to 2466 in the volume. > > > to verify that it was't a problem from the extraction, I have tryed > mris_binarize to match the same # segID as the mri_extract_label, > and also use the matlab functions to open the aseg.mgz and keep those > voxels which value were close to the #. > > With these two new options I get exactly the same number of voxels as > with mri_extrac_label. So I don't know what could be the problem. Does > anyone have an idea? > > > Best Regards, > Gabriel. > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ 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.
