Hi Naroa:
If you leave NaN in the bounding box option, you should have exactly the
same dimensions as your native space.
Initial import only roates and translates the image in the native space,
I won't resize the brain. (ridge algnment)
If you want to project your DARTEL warped brain into MNI space, you can
affine reigster your DARTEL template to the MNI template (use
normalization in SPM5, but set the iteration of non-linear warping to
0). Then you can apply the Affine matrix M in the parameter file
generated to each of your dartel warped and modulated images before your
statistical analysis. (multiply the transformation matrix to the .mat
field in the header of each images).
Then things will all work out. I believe John sent the script to apply
the transformation in the email list a while ago...you can search for it
Carlton
NAROA IBARRETXE BILBAO wrote:
>Hi,
>
> I have a very basic question. I have just started to use Dartel tool.
>
>During "initial import" step I do define bounding box instead of using NaN. I
>put the following parameters: -90 -126 -72; 90 90 108 because leaving NaN by
>default the brain resulted smaller than normal.
>
>But now I don't know if it is the right decision. Should I conserve the original
>parameters?
>
>If I have changed the bounding box parameter, when I apply deformations to
>convert the average to MNI space should I put the same parameters used before?
>
>Thank you
>
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