Firat Dogan1, M Serdar Celebi2. 1. Dogus University, Faculty of Engineering, Computer Eng. Dept., Acibadem, Istanbul, 34722, Turkey. 2. Istanbul Technical University, Informatics Institute, Maslak, Istanbul, 34469, Turkey.
Abstract
BACKGROUND: Researchers working on error-prevention theories have shown that the use of replica models within simulation systems has improved operating skills, resulting in better patient outcomes. METHODS: This study aims to provide material test data specifically for a human liver to validate the accuracy of viscoelastic soft tissue models. This allows the validation of virtual surgery simulators by comparison with physical test data obtained from material tests on a viscoelastic silicone gel pad. RESULTS: The results proved that stress behavior and relaxation curves of Aquaflex® experiment and FEM simulation are close if average liver response and respective material parameters and model are used. CONCLUSIONS: The precise representation of manipulated tissues used in virtual surgery trainers involves the accurate characterization of mechanical properties of the tissue. Consequently, successful implementations of these mechanical properties in a mathematical model of the deforming organ are of major importance.
BACKGROUND: Researchers working on error-prevention theories have shown that the use of replica models within simulation systems has improved operating skills, resulting in better patient outcomes. METHODS: This study aims to provide material test data specifically for a human liver to validate the accuracy of viscoelastic soft tissue models. This allows the validation of virtual surgery simulators by comparison with physical test data obtained from material tests on a viscoelastic silicone gel pad. RESULTS: The results proved that stress behavior and relaxation curves of Aquaflex® experiment and FEM simulation are close if average liver response and respective material parameters and model are used. CONCLUSIONS: The precise representation of manipulated tissues used in virtual surgery trainers involves the accurate characterization of mechanical properties of the tissue. Consequently, successful implementations of these mechanical properties in a mathematical model of the deforming organ are of major importance.
Authors: Timothy A Bigelow; Clayton L Thomas; Huaiqing Wu; Kamal M F Itani Journal: IEEE Trans Ultrason Ferroelectr Freq Control Date: 2018-06 Impact factor: 2.725
Authors: Timothy A Bigelow; Clayton L Thomas; Huaiqing Wu; Kamal M F Itani Journal: IEEE Trans Ultrason Ferroelectr Freq Control Date: 2018-11-14 Impact factor: 2.725
Authors: Timothy A Bigelow; Clayton L Thomas; Huaiqing Wu; Kamal M F Itani Journal: IEEE Trans Ultrason Ferroelectr Freq Control Date: 2017-06-22 Impact factor: 2.725