Detail publikace

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

HENYŠ, P. VOŘECHOVSKÝ, M. STEBEL, J. KUCHAŘ, M. EXNER, P.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Bone fracture; Bone stiffness; Biomechanics; Computational  modeling

Autoři

HENYŠ, P.; VOŘECHOVSKÝ, M.; STEBEL, J.; KUCHAŘ, M.; EXNER, P.

Vydáno

1. 5. 2022

Nakladatel

ELSEVIER SCI LTD

Místo

OXFORD

ISSN

0268-0033

Periodikum

CLINICAL BIOMECHANICS

Ročník

97

Číslo

7

Stát

Spojené království Velké Británie a Severního Irska

Strany počet

12

URL

https://www.clinbiomech.com/article/S0268-0033(22)00134-6/fulltext

BibTex

@article{BUT179193,
  author="Petr {Henyš} and Miroslav {Vořechovský} and Jan {Stebel} and MIchal {Kuchař} and Pavel {Exner}",
  title="From computed tomography to finite element space: A unified bone material mapping strategy",
  journal="CLINICAL BIOMECHANICS",
  year="2022",
  volume="97",
  number="7",
  pages="12",
  doi="10.1016/j.clinbiomech.2022.105704",
  issn="0268-0033",
  url="https://www.clinbiomech.com/article/S0268-0033(22)00134-6/fulltext"
}