I would suggest using the Display button to approximately align the data to
MNI space by changing the origin and possibly the orientation. The Check Reg
button will tell you if it has worked. A search through the archives for the
appropriate key words will bring up quite a lot of answers for this one.
I would also consider using the Segment button to do the spatial
normalisation. This generates a seg_sn.mat file that can be used for writing
the spatially normalised data.
Best regards,
-John
On Thursday 07 February 2008 00:06, Clare Emily Bajraszewski wrote:
> I am attempting to use SPM2 to normalise FLAIR (a T2 weighted acquisiton
> but with CSF suppression) scans for the purpose of lesion identification
> in multiple sclerosis. I used the following parameters:
>
> Preserve concentrations
> Bounding box- template
> Voxel sizes 2x2x2
> Interpolation method 4th degree b-spline
> No wrap
>
> ... and attempted to normalise FLAIR images (both with and without brain
> extraction) to a number of different templates (T1, T2, EPI, PD).
>
> I keep getting the following error message:
>
> 'There is not enough overlap in the images to obtain a solution. Please
> check that your header information is OK'.
>
> Does anyone know what could be causing this, and whether changing any of
> the default options could fix it?
>
> Thanks!
> Clare Bajraszewski
> Howard Florey Institute, Melbourne, AUS
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