Viscoelastic Characterization of Parasagittal Bridging Veins and Implications for Traumatic Brain Injury : A Pilot Study
García-Vilana, Silvia (Universitat Politècnica de Catalunya)
Sánchez-Molina, David (Universitat Politècnica de Catalunya)
Llumà, Jordi (Universitat Politècnica de Catalunya)
Galtés, Ignasi (Universitat Autònoma de Barcelona. Departament de Psiquiatria i de Medicina Legal)
Velázquez-Ameijide, Juan (Universitat Politècnica de Catalunya)
Rebollo-Soria, M. Carmen (Instituto de Medicina Legal de Aragón)
Arregui-Dalmases, Carlos (Centro Zaragoza)

Data:	2021
Resum:	Many previous studies on the mechanical properties of Parasagittal Bridging Veins (PSBVs) found that strain rate had a significant effect on some mechanical properties, but did not extensively study the viscoelastic effects, which are difficult to detect with uniaxial simple tensile tests. In this study, relaxation tests and tests under cyclic loading were performed, and it was found that PSBVs do indeed exhibit clear viscoelastic effects. In addition, a complete viscoelastic model for the PSBVs is proposed and data from relaxation, cyclic load and load-unload tests for triangular loads are used to find reference values that characterize the viscoelastic behavior of the PSBVs. Although such models have been proposed for other types of blood vessels, this is the first study that clearly demonstrates the existence of viscoelastic effects from an experimental point of view and also proposes a specific model to explain the data obtained. Finally, this study provides reference values for the usual viscoelastic properties, which would allow more accurate numerical simulation of PSBVs by means of computational models.
Ajuts:	Fundació la Marató de TV3 289/C/2017,201704.30
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Bridging veins ; TBI ; Tissue characterization ; Biomechanics ; Strain rate dependent materials ; Viscoelasticity
Publicat a:	Bioengineering, Vol. 8 (october 2021) , ISSN 2306-5354

DOI: 10.3390/bioengineering8100145
PMID: 34677218

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