Hi I noticed in my FreeSurfer runs, that there is a significant volume difference for sub-cortical structures obtained using the aseg.stat file and the mri_binaraize command. For example I got 14454mm3 for Thalamus-Proper (obtained by summing up the values for Left_Thalamus-Proper and Right-Thalamus-Proper) using aseg.stats file. For the same subject I got 15091mm3 using the command " mri_binarize --i aseg.mgz --match 10 --match 49 --o Thalamus-Proper_mask.nii.gz". Is this normal ? If so what is the most accurate method ? Thanks in advance, Indika Walimuni Research Associate University of Texas Health Science Center Houston, TX.
Hi Indika,
the aseg.stats includes partial volume estimates, so it should be more accurate (and not the same as the result of mri_binarize)
cheers Bruce
On Fri, 5 Feb 2010, Walimuni, Indika S wrote:
Hi I noticed in my FreeSurfer runs, that there is a significant volume difference for sub-cortical structures obtained using the aseg.stat file and the mri_binaraize command. For example I got 14454mm3 for Thalamus-Proper (obtained by summing up the values for Left_Thalamus-Proper and Right-Thalamus-Proper) using aseg.stats file. For the same subject I got 15091mm3 using the command " mri_binarize --i aseg.mgz --match 10 --match 49 --o Thalamus-Proper_mask.nii.gz". Is this normal ? If so what is the most accurate method ? Thanks in advance, Indika Walimuni Research Associate University of Texas Health Science Center Houston, TX. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
-
Bruce Fischl -
Walimuni, Indika S