If the EPI and structural images are from the same subject, then either:
1) The subjects head grew enormously between the EPI and structural
scans.
2) The voxel sizes in the headers are wrong.
Best regards,
-John
On Fri, 2010-04-09 at 17:13 +0200, Nicolaus Klinger wrote:
> Hi SPMers!
>
> During our research we have encountered a problem with the coregistration
> process in SPM8. We have coregistered the individual anatomical image to
> an EPI image as a template, as described in Crinion et al., 2007. However, we
> haven't been able to achieve satisfying success with this method, as the
> coregistered anatomy and the template EPI still differ in size after the
> coregistration procedure. The strucural image is bigger than the EPI-
> apparently the zooming hasn't worked properly. Images were adjusted in
> space to each other before the procedure with check reg. One possible
> cause for the erroneous coregistration we have thought of so far is skull
> remnants on the EPI? What other reasons could cause this problem?
> Thanks in advance for your effort.
> Kind regards,
>
>
> -------------------------------------
>
> DI Nicolaus Klinger
> Study group of clinical fMRI
> Department of Neurology
> Medical University Vienna
> Spitalgasse 34, 1090 Vienna
> fon: 01 40400 3408
> mail: [log in to unmask]
>
--
John Ashburner <[log in to unmask]>
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