A 3D discrete model of the diaphragm and human trunk

Emmanuel Promayon (1) , Pierre Baconnier (1)

1 TIMC-IMAG - Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525

In this paper, a 3D discrete model is presented to model the movements of the trunk during breathing. In this model, objects are represented by physical particles on their contours. A simple notion of force generated by a linear actuator allows the model to create forces on each particle by way of a geometrical attractor. Tissue elasticity and contractility are modeled by local shape memory and muscular fibers attractors. A specific dynamic MRI study was used to build a simple trunk model comprised of by three compartments: lungs, diaphragm and abdomen. This model was registered on the real geometry. Simulation results were compared qualitatively as well as quantitatively to the experimental data, in terms of volume and geometry. A good correlation was obtained between the model and the real data. Thanks to this model, pathology such as hemidiaphragm paralysis can also be simulated.

Domaines: Modélisation et simulation; Biomécanique [physics.med-ph]; Biomécanique [physics.med-ph]; Pneumologie et système respiratoire

Emmanuel Promayon, Pierre Baconnier. A 3D discrete model of the diaphragm and human trunk. "Lung Modelling", Dec 2006, France. pp.66-77. ⟨hal-00294455⟩