Semiautomatic Algorithm for 3D Modelling of Finite Elements of the Cochlea

This paper presents a method of generating a finite element numerical model of the inner ear of the human auditory system. The method consists of two phases, including a semiautomatic algorithm of image processing, which has been developed to obtain a characteristic-point cloud that define the cochlea cross sections, vestibule contours and curvilinear path of the semi-circular canals, and modelling of the point cloud to create the numerical model for the finite element method. The result is a complete numerical inner-ear model composed of a coiled-shaped cochlea with three chambers divided by the basilar membrane and Reissner's membrane, and it is attached to a model of the vestibule and semi-circular canals through hexahedral finite elements. Although the numerical model can be improved, this numerical model may provide support for a more complete model that can perform numerical tests with the finite element method. In the future, the model output may be printed using three-dimensional (3D) technology and biological materials to create an artificial model with vital functions.