This will depend on your ROI software. In general though, SPM usually
does not need images to be resliced so that they match
voxel-for-voxel.
Best regards,
-John
On 28 July 2012 14:25, Jason Love <[log in to unmask]> wrote:
> Dear SPM experts,
> I am doing single subject (ROI) analysis for the first time and I never
> deeply thought about this matter:
> So, the voxel resolution is obviously different between anatomy (1x1x1mm)
> and EPI (3x3x3mm) scans and I wonder if I need to match their size by
> reslicing either anatomy or EPIs
> so that they are best alignened voxel-to-voxel within the ROI. Or, despite
> the resolution differences, I can assume however many voxels in the EPIs are
> within the mask (of ROI) as long as they are in register.
>
> Thanks for your help in advance,
> Jason
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