After segmentation, each resulting breast PCL (≈1900 surface points) was converted to a 3D triangulated surface mesh to model the skin, using the Ball-Pivoting algorithm , in MeshLab . The breast volume was next meshed in Gmsh , by inserting uniformly distributed points inside the object (≈2500 volume points), subsequently connecting them with tetrahedrons elements. To complete the creation of the FEM, distinct boundary conditions and material properties were assigned to the surface mesh - frontal surface, pectoral muscle (back surface), lateral limits, and top and bottom boundaries were defined - following the strategy proposed by Vavourakis et al. .