Dear Alois,
> We aquired a block of only 15 slices which does not
> contain the anterior commissure, which is situated a
> little bit caudal from the most inferior slice of the
> block. So it is not possible to set the origin
> properly.
You can set the origin to be below the image, using the translation boxes in
the SPM display window to move the crosshairs to the correct position (at which
point the crosshairs will disappear off the bottom of the image). Then use the
"Reorient images" button to apply this origin to your images. To make sure the
origin is more or less right you could use CheckReg with a template image.
Best,
Matthew
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