Mesh Generation of Pelvic Organ Surfaces Using Active Contours with Self-Collision Detection

Abstract

Segmentation of medical imaging is one of the main processes in the development of computer-aided applications in several medical practices. In the last few years, different methods were proposed for aiding the diagnosis, treatments and even pre-surgical assistance.
In particular, we are interested in the physical simulation of pelvic dynamics to study the pelvic organ prolapse disease. Hence, our goal is to generate a geometrical model of pelvic organs from Magnetic Resonance Imaging (MRI) acquisitions, which afterwards will contribute to build a physical model of
the patient organs.
In this work, we present a tri-dimensional geometrical generation method for general volumetric segmentation purposes. The geometrical models should be as accurate as possible, therefore the surface mesh obtained must keep some important quality aspects such as not presenting self intersections between its triangles. For this purpose, we introduce a modified active surface model with a novel self-collision inhibitor module.