Thomas Ng wrote:
> Have a question about using an explicit mask. Am I correct in
> surmising that if I input an image file into the explicit mask and no
> other masking on during a PET analysis, then the mask.img file that is
> generated during Estimation should reflect that explicit mask file I
> placed into the setup?
Yes, unless there are some voxels which are constant over the scans,
in which case these will also be masked (line 658 of spm_spm). So
mask.img may contain fewer in-mask voxels than your explicit mask.
Best,
Ged.
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