Hello All!
I'm trying to calculate eTIV (ICV) based on the new Buckner method, but
for reconstructions that were completed prior to the most recent stable
release (in 2003-2004). Are there any extra steps or special files that
I should be aware of to make this run properly? Is the procedure for
estimating ICV on older recons documented anywhere?
I tried running mri_label_volume using the only .lta file available in
the subject/mri/transforms directory
(talairach_with_skull_un5_tinit_noneck_both_uns3.lta) but the resulting
eTIV outputs are much smaller than one would expect. Here's a sample
command and output:
[engram:emoaging] (nmr-std-env) mri_label_volume -eTIV
$SUBJECTS_DIR/emot_118/mri/transforms/talairach_with_skull_un5_tinit_noneck_both_uns3.lta
$SUBJECTS_DIR/emot_118/mri/aseg.mgz 17 53
using eTIV from atlas transform of 878 cm^3
processing label 17...
3730 voxels (3730.0 mm^3) in label 17, %0.424837 of eTIV volume (877983)
processing label 53...
3738 voxels (3738.0 mm^3) in label 53, %0.425748 of eTIV volume (877983)
Any advice?
Thanks!
David
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