Hi Cornelius,
thanks a lot! I'll try the masking proposal, any other comments are still appreciated especially in regard to the registration issue...
Dan
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Von: FSL - FMRIB's Software Library [[log in to unmask]] im Auftrag von Cornelius Werner [[log in to unmask]]
Gesendet: Montag, 29. November 2010 17:28
An: [log in to unmask]
Betreff: Re: [FSL] dual_regression
On Mon, Nov 29, 2010 at 1:49 PM, Daniel Keeser
<[log in to unmask]> wrote:
> Dear list,
>
> I got two very short questions regarding the dual regression approach:
>
> 1. Is it allowed to use single components from the full stats MELODIC group output folder as 4D input file (e.g. probmap_4) instead of the melodic_IC file containing all group components?
I'd say yes. That's what I do, anyway. You need to keep an eye on the
file numbering, though. ICA1 gets vol0000 and so on.
> 2. After the end of the dual_regression process the contrast files look reasonable using fslview BUT they are not perferctly registrated to the MNI template (some activations are a bit outside the template). I checked the details with faslinfo and the it looks ok. Is this a known problem or is there any way to correct/smooth these slightly distortion?
In my experience, this is due to smoothing and registration issues.
Masking with an appropriate brain mask might help. Experts please
correct me, if I am wrong.
Cheers
Cornelius
> Thanks in advance,
>
> Dan
>
--
Dr. med. Cornelius J. Werner
Department of Neurology
RWTH Aachen University
Pauwelsstr. 30
52074 Aachen
Germany
Institute of Neuroscience and Medicine
MR Physics - INM4
Research Centre Juelich
52425 Juelich
Germany
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