I have been working on segmenting the pelvis from a pre-CT scan and then a post CT scan with a fracture. I have both of the segmentations in the same window in Slicer and I have been able to transform the pre-CT on top of the post CT by using the IGT-Fiducials Registration Wizard. However, I want to measure how well these 2 structures are aligning and if there is any deformation/rotation in the axis of these 2. Is there any way that I can easily measure the deformation between these 2 segmentations now that I have them overlapping each other? I hope this makes sense that you are able to help.