Abstract
One of the available tools for validation of strain imaging methods are physical phantoms, most frequently produced of polivinylalcohol cryogel (PVA). This material was often assumed to exhibit elastic properties, but it has more complex nature. In this work we examine the influence of the applied material model – elastic vs hyperelastic – on the strains within the numerical model of the phantom obtained from FEM. This influence appeared significant – hyperelastic model provides lower strain contrasts and also the ratios between radial, circumferential and longitudinal strains differ for both models.
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Notes
- 1.
This was not visualized in this paper, but inspected during our research.
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Acknowledgements
This study was supported by the Polish National Science Centre by the decision DEC-2012/07/B/ST7/01441.
Characterization of PVA material was supported by Polish-Norwegian Research Programme under grant agreement Pol-Nor/209584/19/2013.
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Cygan, S., Żmigrodzki, J., Leśniak-Plewińska, B., Karny, M., Pakieła, Z., Kałużyński, K. (2015). Influence of Polivinylalcohol Cryogel Material Model in FEM Simulations on Deformation of LV Phantom. In: van Assen, H., Bovendeerd, P., Delhaas, T. (eds) Functional Imaging and Modeling of the Heart. FIMH 2015. Lecture Notes in Computer Science(), vol 9126. Springer, Cham. https://doi.org/10.1007/978-3-319-20309-6_36
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DOI: https://doi.org/10.1007/978-3-319-20309-6_36
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