Ed, can you send the recon-all.log file? The underlying code for mris_volume and the program that creates the stats file is identical. This other program (mri_segstats) prints out the values for the volumes inside the lh.pial, etc, and this will be captured by the recon-all.log file.
doug
Ed Gronenschild wrote:
Dear Christian,
Thanks for your suggestion. I followed the instructions to derive the GM and WM volumes. Here are the (rounded-off) results for one example:
mris_volume lh.pial: 532767 mris_volume rh.pial: 536127
mris_wm_volume lh: 251139 mris_wm_volume rh: 254730
Accordingly: gm lh = 532767 - 251139 = 281628 gm rh = 536127 - 254730 = 281397
Left + right: total = 1068894 wm = 505869 gm = 563025
The aseg.stats file lists the following results:
cortical wm lh: 251139 cortical wm rh: 254730 total wm: 505869
cortical gm lh: 263888 cortical gm rh: 265231 total cortical gm: 529119 subcortical gm: 181270 total gm: 710389
For wm both results are equal but for gm they are not.
So now my question still exists: which wm and gm volumes should I take?
Ed
On 26 Oct 2010, at 20:40, freesurfer-request@nmr.mgh.harvard.edu mailto:freesurfer-request@nmr.mgh.harvard.edu wrote:
Dear Ed,
to my knowledge, "mris_wm_volume" is the best option to determine the white matter volume.
See this wiki page for usage: http://surfer.nmr.mgh.harvard.edu/fswiki/MorphometryStats
Best wishes, Christian
Christian Scheel Department of Psychiatry University of Cologne
Am 26.10.2010 15:22, schrieb Ed Gronenschild:
Hi,
I post this once again because I didn't get any response.
In the v5.0.0 aseg.stats file I can find the following volumes:
left/right cortical gray mattersubcortical gray mattertotal cortical gray mattertotal gray matter volumeand
left/right cortical white mattertotal cortical white matterHow can I derive the total white matter volume?
Ed
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