Hi Amir,
This is probably an issue that has come up on the mailing list a
couple of time, briefly: SPM5's unified segmentation is more sensitive
to the initial rigid alignment of the images with the template/priors
than SPM2's normalisation was.
Use Check Reg, with the template and your images, right click your
image and select "reorient this image" from the context menu (I'm
working from memory here, but hopefully that's correct). You don't
need perfect AC-PC alignment, but you do need rough agreement of brain
orientation.
Hope that helps,
Ged.
On 12/10/2007, Amir Tahmasebi <[log in to unmask]> wrote:
> Dear SPM experts,
>
> I am using SPM5's unified segmentation technique for warping. It works
> fine on 17 out of 21 subjects but it doesn't properly deform the other 4
> subjects' data. However, when using SPM2's normalization, all 21 subjects
> are properly deformed to match ICBM template. I tried different values (1,
> 10, 100) for the warping regularisation but still couldn't make it work. I
> appreciate it if you could kindly help me with this case. I can send you
> one of the datasets if you want to try. Thanks in advance.
>
> Regards,
> Amir Tahmasebi
>
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