Hi Gwenaelle,
Thanks for the tip. I just got around to giving it a try and the FLIRT 12
deg affine transform behaved much better than areg as you suggested. One
question though, how do I go about converting the 12 dof .mat affine
transform matrix to the 15 dof areg .dof so I can continue using
tbss_3_postreg script?
Thanks,
Tal.
On Wed, 10 Jan 2007 10:52:10 +0100, Gwenaëlle DOUAUD
<[log in to unmask]> wrote:
>Hi Tal,
>
>not sure what happened, but I would say that this is
>only the affine registration between your best target
>and the T1 MNI152 that didn't work correctly. Could
>you check so? If it is correct, then run flirt which
>is much more robust (instead of areg) to generate the
>affine transformation...
>
>Hope this helps,
>Gwenaelle
>
>
>--- Tal Herbsman <[log in to unmask]> a écrit :
>
>> I redid a tbss run and got a skeleton which is
>> poorly alligned w/ the MNI
>> template (see attached .png image --> corpus
>> collusum is well off MNI
>> corpus, etc...) What do you folks suggest? Can I
>> refine the registration to
>> MNI space? Should I try to select another target
>> instead of the best fit
>> target generated in tbss step 2 (I ran the hungry,
>> no target version of the
>> algorithm) in an attempt to get a better
>> registration?
>>
>> Is this strictly an aesthetic issue--i.e. the
>> figures generated from the
>> tbss run will look poorly alligned but results are
>> still valid--or should I
>> be looking for some deeper problem?
>>
>> Thanks as always,
>>
>> Tal.
>>
>>
>> -------------------------
>>
>> Tal Herbsman, MD
>>
>> Department of Psychiatry
>> Medical University of South Carolina
>> 67 President Street, 5 South
>> Charleston, SC 29425
>>
>> Pager: (843) 792-2123 #15493
>>
>
>
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