Parameters identification method for breast biomechanical numerical model
This work addresses the need for practical parameter identification in breast biomechanical simulations for medical applications, but it appears incremental as it builds on existing models with a simplified approach.
The authors tackled the problem of identifying parameters for a biomechanical breast model by proposing a simple, realistic model that uses basic measurements instead of complex medical imagery, and they conducted a sensitivity analysis to evaluate the robustness of their optimization method.
Bio-mechanical breast simulations are based on a gravity free geometry as a reference domain and a nonlinear mechanical model parameterised by physical coefficients. As opposed to complex models proposed in the literature based on medical imagery, we propose a simple but yet realistic model that uses a basic set of measurements easy to realise in the context of routinely operations. Both the mechanical system and the geometry are controlled with parameters we shall identify in an optimisation procedure. We give a detailed presentation of the model together with the optimisation method and the associated discretisation. Sensitivity analysis is then carried out to evaluate the robustness of the method.