# Parameters identification method for breast biomechanical numerical model

## TL;DR

This paper introduces a simple, realistic breast biomechanical model using basic measurements, and presents an optimization-based parameter identification method with sensitivity analysis to ensure robustness.

## Contribution

It proposes a novel, easy-to-measure parameter identification approach for breast biomechanical models, contrasting with complex medical imagery-based models.

## Key findings

- Model and optimization method detailed
- Sensitivity analysis confirms robustness
- Applicable with routine measurements

## Abstract

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.