Patient-specific geometrical modeling of orthopedic structures with high efficiency and accuracy for finite element modeling and 3D printing

摘要: We improved the geometrical modeling procedure for fast and accurate reconstruction of orthopedic structures. This consists medical image segmentation, three-dimensional reconstruction, assignment material properties. The patient-specific structures reconstructed by this can be used in virtual surgical planning, 3D printing real finite element analysis. A conventional of: mesh generation, present study modified method to enhance software operating procedures. Patient's CT images different bones were acquired subsequently give models. procedures modification edge length quantity meshes, properties according intensity gravy value. compared performance our terms time, success rate quality. Our proposed framework has following improvements modeling: (1) processing time: (femur: 87.16 ± 5.90 %; pelvis: 80.16 7.67 thoracic vertebra: 17.81 4.36 P < 0.05); (2) least volume reduction 0.26 0.06 0.70 0.47, 3.70 1.75 0.01) (3) quality aspect ratio 8.00 7.38 17.70 9.82 13.93 9.79 0.05) maximum angle 4.90 5.28 17.20 19.29 3.86 3.82 0.05). requires less time workload, but generated at a higher as with method. It is expected benefit planning high accuracy modeling.