In-Vivo Soft Tissues Mechanical Characterization: Volume-Based Aspiration Method Validated on Silicones
| Autor: | Seyed Ali Elahi, Yohan Payan, Grégory Chagnon, Nathanaël Connesson |
|---|---|
| Přispěvatelé: | Ingénierie Biomédicale et Mécanique des Matériaux (TIMC-IMAG-BioMMat), Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525 (TIMC-IMAG), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Gestes Medico-chirurgicaux Assistés par Ordinateur (TIMC-IMAG-GMCAO) |
| Rok vydání: | 2019 |
| Předmět: |
Measurement method
Materials science Mechanical Engineering Aerospace Engineering Soft tissue In-vivo measurement Context (language use) 02 engineering and technology 021001 nanoscience & nanotechnology Finite element method Synthetic materials Characterization (materials science) [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] 020303 mechanical engineering & transports Experimental mechanics 0203 mechanical engineering Mechanics of Materials Solid mechanics Soft tissues characterizations Suction/aspiration method 0210 nano-technology Silicone Biomedical engineering Volume (compression) |
| Zdroj: | Experimental Mechanics Experimental Mechanics, Society for Experimental Mechanics, 2019, 59, pp.251-261. ⟨10.1007/s11340-018-00440-9⟩ |
| ISSN: | 1741-2765 0014-4851 |
| Popis: | International audience; Simulating the deformations of soft tissues has gained importance in recent years due to the development of 3D patient-specific biomechanical models in the context of Computer Assisted Medical Interventions. To design such models, the mechanical behavior of each soft tissue has to be characterized in-vivo. In this paper, a volume-based aspiration method for in-vivo mechanical characterization of soft tissues was validated on synthetic materials. For this purpose, two silicones with slightly different stiffnesses were made. Samples were characterized using (1) aspiration, and, as references, two classical tests such as (2) uniaxial and (3) equibiaxial extension tests. Performing a Finite Element (FE) inverse identification on the experimental results provided Young's moduli similar to classical tests with about 7% maximum overestimation for the two silicones. This highlighted a significant improvement of the measurement method accuracy compared to the literature (about 30% relative overestimation). Eventually, the aspiration method ability to discriminate the two silicones was also tested and proven to be similar to classical characterization tests. Based on the presented results, relative mechanical behavior mapping of soft tissues (organ or skin) is possible without requiring an inverse characterization procedure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink