Title: Performance evaluation of a computational model for brain shift calculation

Authors: Karin Correa Arana; Natividad Bermejo Herrero; Oscar Andrés Vivas Albán; José María Sabater Navarro

Addresses: Department of Automation, School of Electronics and Telecommunications Engineering, Universidad del Cauca, Popayán, Colombia ' Department of Systems and Automation Engineering, Universidad Miguel Hernández de Elche, Elche, Alicante, Spain ' Department of Automation, School of Electronics and Telecommunications Engineering, Universidad del Cauca, Popayán, Colombia ' Department of Systems and Automation Engineering, Universidad Miguel Hernández de Elche, Elche, Alicante, Spain

Abstract: This article shows a solution for the computation of deformable tissues displacements in the brain shift problem in neurosurgery. In this type of surgery, the brain moves and deforms, changing the pre-surgical reference the surgeon had before the intervention. Among the causes of brain shift are the effect of gravity, loss of cerebrospinal fluid as a consequence of the resection practiced, the effect of the drugs supplied, among others. This document refers to the physical model of this displacement to later simulate them in multiphysics software. A phantom test was constructed by means of hydrogels, imitating the porcine brain tissue, which is subjected to compression along the z-axis. The results show that the simulation proposed reproduces the behaviour of the real phantom with a high level of accuracy. The application developed may serve in the future to reproduce the total behaviours of the brain and thus obtain a better calculation of the brain shift.

Keywords: neurosurgery; brain shift; neuronavigation; medical robotics; constitutive models; hyperelastic material model; constitutive parameters.

DOI: 10.1504/IJMEI.2021.115961

International Journal of Medical Engineering and Informatics, 2021 Vol.13 No.4, pp.308 - 322

Received: 15 Mar 2019
Accepted: 04 Sep 2019
Published online: 06 Jul 2021 *

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