Hi Martino.
Your question is very interesting.
Did you make the SSM with itk? With which class? Do you have a code sample?
Do you know something ready to use to do this ?
I think you could do it with itk. See below
Here are some useful resourses for you I found online that might answer your questions:
https://munch.paap.cup.edu.uy/w/index.php/ContributedCode:ITKShapeGuidedSegmentation
https://itk.org/ItkSoftwareGuide.pdf → search for Model Based Registration
Please keep me posted of your advances with this method. I would be very interested on seeing preliminar results.
Mauro