Modeling of Personalized Anatomy Using Plastic Strains

We present a method for modeling solid objects undergoing large spatially varying and/or anisotropic strains, and use it to reconstruct human anatomy from medical images. Our novel shape deformation uses plastic strains the finite element successfully model shapes specified by sparse point constraints on boundary of object. extensively compare our standard second-order methods, variational surface-based demonstrate that avoids spikiness, wiggliness, other artifacts previous methods. how perform such both attached un-attached (“free flying”) objects, using solve linear systems with singular matrices known nullspace. Although is applicable general large-strain modeling, we create personalized 3D triangle volumetric meshes organs, based magnetic resonance imaging or computed tomography scans. Given medically accurate template generic individual, optimize geometry organ match scan specific individual. examples include hand muscles, liver, hip bone, gluteus medius muscle (“hip abductor”).