MIMvista (Booth 2015) is demonstrating its VoxAlign Deformation Engine, which allows for atlas-based segmentation and re-contouring for adaptive therapy and gated studies. Atlas-based segmentation generates entire structure sets, including target volumes, reducing time for initial contour generation. Adaptive re-contouring deforms contours from an original planning CT to a new planning CT. Entire gated CT studies can be contoured by deforming contours from a single phase to match the anatomy on all phases. Deformable co-registration corrects for non-rigid differences in alignment allowing PET/CT’s to be aligned with greater accuracy to the planning CT.