A novel deformation method for fast simulation of biological tissue formed by fibers and fluid

Medical Image Analysis
Ivan F Costa

Abstract

This paper presents a new approach to the simulation of soft tissues deformation suitable for real time computation, particularly intriguing for medical applications. The approach implements a quasi-static solution for elastic global deformations of objects filled with fluid and fibers, which can be a good approximation for biological tissues. It is based on the Pascal's principle and the conservation of volume. Large deformations that quickly change the whole shape of the object can be stably simulated in a small number of time steps. In our approach each pair of surface vertices is connected and defines an elastic fiber. The set of all the elastic fibers defines a mesh of an order of magnitude smaller than the volumetric meshes, allowing the simulation of complex objects with less computational effort. The proposed method was applied to study the effects of forces for deformation and displacement of soft geometrical objects (rod, sphere, etc.) in order to analyze the results on simple forms. Then a compression similar to the deformation obtained during a mammographic examination procedure is applied to a breast. A preliminary validation is done by comparing deformation result between our new method and real ex vivo bovine liv...Continue Reading

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Citations

Apr 19, 2016·Source Code for Biology and Medicine·Ana Gabriella de Oliveira SardinhaIvan F Costa
Jul 11, 2018·IEEE Reviews in Biomedical Engineering·Jinao ZhangChengfan Gu
Jan 7, 2016·Physics in Medicine and Biology·John H HipwellDavid J Hawkes

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