Hi,
I was starting to create a table of segmentation volumes corresponding to several given label (--segno 255 i.e., CC_Anterior). However, I found the volume values for a same strucutre were different between the two files *aseg.stats and wmparc.stats*. For example, for CC_Anterior, one subject was 745 mm^3 in the aseg.stats, but 729 mm^3 in the wmparc.stats. I am not sure why they are different and which file should be selected to represent the volumes. I am appreciated for any suggestions.
Best, Liang
Please use the aseg.stats for the corpus callosum. wmparc.stats should be used only for the wm parcellations. This will be fixed in the next release of freesurfer.
Hi Liang,
this is because of partial volume correction. Use the aseg when they differ cheers, Bruce
On Mon, 12 Jul 2010, liang wang wrote:
Hi,
I was starting to create a table of segmentation volumes corresponding to several given label (--segno 255 i.e., CC_Anterior). However, I found the volume values for a same strucutre were different between the two files *aseg.stats and wmparc.stats*. For example, for CC_Anterior, one subject was 745 mm^3 in the aseg.stats, but 729 mm^3 in the wmparc.stats. I am not sure why they are different and which file should be selected to represent the volumes. I am appreciated for any suggestions.
Best, Liang
freesurfer@nmr.mgh.harvard.edu
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Allison Stevens -
Bruce Fischl -
liang wang