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Stefan,

You can make a mask out of the segmented image and apply that mask to your
other image. If you go to image calc and click on the help there is a
discription of how to do this.

Good luck,

Paul Laurienti

Stefan Steens wrote:

> Dear members of the list,
> I want to use one segmented structural image series (img1: CSF, white
> matter, grey matter) to oppose to another (coregistered) image series
> (img2: has poor grey/white contrast itself), to obtain segmented images
> from img2. I already have the segmented img1. I assume it's possible to do
> this, probably with ImCalc. I'm pretty new on SPM, and cannot find the
> right way. Anyone has experience with this?
> Best regards
>
> Stefan Steens
> Leiden University Medical Center
> Leiden, the Netherlands