> I would like to build my own T1 anatomical template.
> Does the T1 template image is the T1 canonical image smoothed with a
> Gaussian kernel ?
> If so what is the filter size I have to use on my original structural
> image in order to compute a similar volume than the T1 template provided
> by SPM.
The image is the canonical T1 convolved with an 8mm FWHM Gaussian.
With hindsight, I would have released a template based on the average
of a number of spatially normalized images, rather than the single
image that is currently used. You should get slightly more consistant
spatial normalization results if you use a template based upon the
average of a few brain images.
Regards,
-John
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