It's very hard to tell from these data how well things have worked. I
can't give so much useful advice as I have no experience of working
with such distorted fMRI data. I think that figuring out the best
pre-processing strategy for these data may require a lot of trial and
error.
Best regards,
-John
On 26 October 2010 07:32, Arun Kumar <[log in to unmask]> wrote:
> Dear SPM Users,
>
> I am preprocessing my fMRI data using SPM5. After coregistration step, the
> structural image is found to be oblique (not aligned properly) with respect
> to the mean functional image (shown in file attached). This then causes the
> functional images also to be sliced obliquely in the further normalisation
> step (after segmentation step). Is this an error because of the origin being
> not set properly in the beginning for the images or is it inherent in data?
>
> I also tried setting origin for functional images in SPM5. After setting new
> origin and pressing reorient images, the header files for images do get
> changed but if the images are displayed again using the display images
> option, the origin is not where it had been set.
>
> Pls. let me know if i am missing some step or something is wrong with my
> data.
>
> (See attached file: coregistration.pdf)
>
> Thanks & Regards
> Arun Kumar
> Lecturer
> School of EEE,
> Singapore Polytechnic,
> Singapore.
> Phone: (065) 68704892
> Fax : (065) 67721974
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