DTITK and voxel-based results of scalar values
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Bryan Benson
Apr 27, 2012, 10:08:45 PM4/27/12
to DTI-TK
Hi,
Quick question -
I'm coupling DTITK normalization with FSL's randomise for scalar
values (FA, norm) to compare groups. I keep getting an artifactual
'ring' around the outside of the brain, reminiscent of a motion
artifact in fMRI. Has anyone else encountered this and found a
solution? I'd like to avoid having to do ICA or something of that
nature. Perhaps there's another program for voxel-based stats I could
use?
This is meant to complement an ROI-based analysis, so I'd rather not
just give up on the voxel-based approach entirely.
Thanks very much in advance!
Bryan
Quick question -
I'm coupling DTITK normalization with FSL's randomise for scalar
values (FA, norm) to compare groups. I keep getting an artifactual
'ring' around the outside of the brain, reminiscent of a motion
artifact in fMRI. Has anyone else encountered this and found a
solution? I'd like to avoid having to do ICA or something of that
nature. Perhaps there's another program for voxel-based stats I could
use?
This is meant to complement an ROI-based analysis, so I'd rather not
just give up on the voxel-based approach entirely.
Thanks very much in advance!
Bryan
PaulSmith
Apr 28, 2012, 3:48:40 AM4/28/12
to dt...@googlegroups.com
Hi Bryan
Maybe you could apple some mask before group comparison.
Maybe using FA threshold or brain mask will be useful for your research.
Best
Kun-Hsien Chou Ph.D.
Brain Connectivity Lab
Institute of Neuroscience
National Yang-Ming University, Taipei, Taiwan
Tel: +886 2 28267000 #6134
Fax: +886 2 28262285
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