In recent years, the development of 3D technology has found large applications in the medical field, from new diagnostic 3D imaging techniques to surgery. The use of 3D technologies plays an essential role in pre-operative planning because it allows you to obtain high-precision reconstructions of anatomical parts and plan interventions in a targeted and specific way. 3D reconstructions in medicine deriving from CT images can be Volume Rendering type, useful for surgical planning and Surface Rendering type, meshes obtained through segmentation, which can be post-processed for finite element analyses or to perform displacement simulations, as in the case of osteotomies for bone reconstructions.