> I have used the Xtract surface function in order to multiply the rendered
> brain
> with my GM segment to remove extracerebral voxels.
> But only .mat files result from the Xtract function. In order to multiply
> my GM
> segment by the Xtracted brain with ImCalc I need an .img file of the
> Xtracted brain.
> How to get such a file?
> Do I have to use the "Write only" procedure from normalization?
Which version of SPM are you using. This procedure only works for SPM99. If
you are using SPM2, then the procedure is incorporated into the segmentation.
Best regards,
-John
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