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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/46747885:24220/22:00010661 RIV/00216208:11150/22:10455922

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20600 - Medical engineering

Projekt

<a href="/cs/project/LTAUSA19058" target="_blank" >LTAUSA19058: Rozvoj teorie a pokročilých algoritmů pro analýzu neurčitostí v inženýrských úlohách (UNCEPRO)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

CLINICAL BIOMECHANICS

ISSN

0268-0033

e-ISSN

1879-1271

Svazek periodika

97

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

„“-„“

Kód UT WoS článku

000830393600001

EID výsledku v databázi Scopus

2-s2.0-85134248663