Hi
you can specifically ask for a 6DOF (translations/rotations only)
transformation when using the FLIRT GUI or the command line
cheers
christian
On 26 Nov 2005, at 17:49, Thomas, Adam (NIH/NIMH) wrote:
> The AFNI package has a utility to manually perform "AC-PC"
> alignments on
> structural brain images. This moves brains into a common alignment
> without scaling or warping them which can be desirable for certain
> kinds
> group analysis using cortical surfaces:
> (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?
> cmd=Retrieve&db=pubmed&do
> pt=Abstract&list_uids=16035046&query_hl=1)
>
> I'm looking for an automated way of doing this, hopefully using
> FLIRT. I
> was thinking of trying to do a 7 DOF alignment between each subject's
> brain and the MNI brain but then only applying the translation and
> rotation portions of transformation. But I'm not sure how to go about
> separating the rotation and translation operations in the *.mat file
> from the scaling.
>
> Can anyone advise how I might accomplish this?
>
> Thanks,
> -Adam Thomas
>
>
> ---
> Adam Thomas [log in to unmask]
> Functional MRI Facility, NIMH/NIH/DHHS
> 10 Center Dr, Room B1D708A
> Bethesda MD. 20892-1148
> Phone:301-402-6351 Fax: 301-402-1370
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