Case Study: Toyota achieves improved pectus excavatum modeling with Synopsys Simpleware THUMS

Developing a FE Model for Pectus Excavatum Evaluation using Toyota’s THUMS

Toyota’s THUMS and Synopsys Simpleware were used by JSOL and Nagano Children’s Hospital to create a finite element model for evaluating pectus excavatum, a chest wall deformity that can require Nuss procedure surgery. The challenge was to accurately reproduce patient-specific bone shape and pathological conditions from CT images for a 10-year-old model.

Synopsys helped enable a workflow that morphed the THUMS chest model to match patient anatomy and simulated post-operative development by modeling costal cartilage growth with thermal expansion. The result was a more realistic FE model for pectus excavatum research, improving the ability to study surgical outcomes and physiological change.

Toyota