My best guess would be that the initial alignment between your images
and the PET template data is not so good. Try using Check Reg with
both images to see. If necessary, you can then reposition your image
via the Display button.
Best regards,
-John
On 31 March 2011 16:46, Ciarmiello Andrea <[log in to unmask]> wrote:
> Normalizing a FDG-PET image, using a standard pet template
> i got an empty normalized image (all black)
> and I found the following message in matlab window
>
>> In spm_normalise>snbasis at 303
> In spm_normalise at 194
> In spm_config_norm>estwrite at 491
> In spm_jobman>run_struct1 at 1485
> In spm_jobman>run_struct1 at 1493
> In spm_jobman>run_struct1 at 1493
> In spm_jobman>run_struct1 at 1493
> In spm_jobman>run_struct at 1442
> Warning: Matrix is singular, close to singular or badly scaled.
> Results may be inaccurate. RCOND = NaN.
>
> Can somebody help me ???
>
> Andrea
>
|