From computed tomography to finite element space: A unified bone material mapping strategy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU145583" target="_blank" >RIV/00216305:26110/22:PU145583 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24220/22:00010661 RIV/00216208:11150/22:10455922
Result on the web
<a href="https://www.clinbiomech.com/article/S0268-0033(22)00134-6/fulltext" target="_blank" >https://www.clinbiomech.com/article/S0268-0033(22)00134-6/fulltext</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.clinbiomech.2022.105704" target="_blank" >10.1016/j.clinbiomech.2022.105704</a>

Result language
angličtina
Original language name
From computed tomography to finite element space: A unified bone material mapping strategy
Original language description
Background: The spatially varying mechanical properties in finite element models of bone are most often derived from bone density data obtained via quantitative computed tomography. The key step is to accurately and efficiently map the density given in voxels to the finite element mesh.Methods: The density projection is first formulated in least-squares terms and then discretized using a continuous and discontinuous variant of the finite element method. Both discretization variants are compared with the nodal and element approaches known from the literature.Findings: In terms of accuracy in the L2 norm, energy distance and efficiency, the discontinuous zero-order variant appears to be the most advantageous. The proposed variant sufficiently preserves the spectrum of den-sity at the edges, while keeping computational cost low.Interpretation: The continuous finite element method is analogous to the nodal formulation in the literature, while the discontinuous finite element method is analogous to the element formulation. The two variants differ in terms of implementation, computational cost and ability to preserve the density spectrum. These differences cannot be described and measured by known indirect methods from the literature.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20600 - Medical engineering

Project
<a href="/en/project/LTAUSA19058" target="_blank" >LTAUSA19058: Development of theory and advanced algorithms for UNCertainty analyses in Engineering PROblems (UNCEPRO)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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