Simulation of Lung Respiration Function Using Soft Body Model

Soft bodies are the models in which the bodies deform during animated frames depending on the interaction between themselves and environment. In our soft body model, the mass-spring system combining with a fluid model manipulates surface deformation while the internal pressure generates the volume inside the soft body. The simulation of soft body for medical applications such as lung simulation remains a challenging problem because of computational complexity. For 3D lung simulation in this paper, we use the synthetic lung model in which the list of surface points is generated by modeling software. A mass-spring system and fluid model are applied on the lung surface and internal pressure is exerted inside the lung model. For the lung function, we model internal pressure based on experimental results to generate the respiratory rhythm of inhalation and exhalation. Our results show that the lung can be simulated by our soft body model. Our lung model controls respiratory function through the control of internal pressure.