Hello Freesurfer community,
I am using the mri_glmfit model to analyze my group data at two time points. First I ran the following commanded swapping pc1 with spc to get an image of the symmetrized percent change across my group.
------------------------------------------------------------------------------------------------------------------------- long_mris_slopes --qdec long.testretest.qdec \ --meas thickness \ --hemi lh \ --sd $SUBJECTS_DIR \ --do-pc1 --do-label \ --generic-time \ --fwhm 15 \ --qcache fsaverage \ --stack-pc1 lh.testretest.thickness-pc1.stack.mgh \ --isec-labels lh.testretest.fsaverage.cortex.label
mri_glmfit --osgm \ --glmdir lh.testretest.thickness-pc1.fwhm15 \ --y lh.testretest.thickness-pc1.stack.fwhm15.mgh \ --label lh.testretest.fsaverage.cortex.label \ --surf fsaverage lh
tksurfer fsaverage lh pial -overlay lh.testretest.thickness-pc1.fwhm15/osgm/sig.mgh ---------------------------------------------------------------------------------------------------------------------------------------
Next I ran the following command to get volume change results:
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long_stats_slopes --qdec long.testretest.qdec \ --stats aseg.stats \ --meas volume \ --sd $SUBJECTS_DIR \ --do-pc1 \ --generic-time \ --stack-pc1 testretest.aseg-pc1.stack.txt
mri_glmfit --osgm \ --glmdir testretest.aseg-pc1 \ --table testretest.aseg-pc1.stack.txt
cat testretest.aseg-pc1/sig.table.dat
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The results from the volume command are all in a table which is useful however I was wondering if there also is anyway to get a visual picture of the percent volume changes like the first spc command provided?
Also is there any command that can give you the percent change in global brain volume?
Thanks for the help!
Cheers,
Taylor North