Number of the records: 1

High-resolution time-lapse tomography of rat vertebrae during compressive loading: deformation response analysis

SYSNO ASEP	0429467
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	High-resolution time-lapse tomography of rat vertebrae during compressive loading: deformation response analysis
Author(s)	Fíla, Tomáš (UTAM-F)_{RID, SAI, ORCID} Kytýř, Daniel (UTAM-F)_{SAI, RID, ORCID} Zlámal, Petr (UTAM-F)_{RID, SAI, ORCID} Kumpová, Ivana (UTAM-F)_{RID, SAI, ORCID} Doktor, Tomáš (UTAM-F)_{RID, SAI, ORCID} Koudelka_ml., Petr (UTAM-F)_{RID, SAI, ORCID} Jiroušek, Ondřej (UTAM-F)_{RID, SAI}
Number of authors	7
Source Title	Journal of Instrumentation. - : Institute of Physics Publishing - ISSN 1748-0221 Roč. 9, May (2014), C05054
Number of pages	8 s.
Publication form	Online - E
Action	International workshop on radiation imaging detectors /15./
Event date	23.06.2013-27.06.2013
VEvent location	Paris
Country	FR - France
Event type	WRD
Language	eng - English
Country	GB - United Kingdom
Keywords	image reconstruction in medical imaging ; computerized tomography ; computed radiography
Subject RIV	JJ - Other Materials
R&D Projects	GAP105/10/2305 GA ČR - Czech Science Foundation (CSF)
	LO1219 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UTAM-F - RVO:68378297
UT WOS	000340036100054
EID SCOPUS	84903625124
DOI	10.1088/1748-0221/9/05/C05054
Annotation	This paper is focused on investigation of mechanical properties of rat vertebrae during compressive loading in the longitudinal direction of rat’s spine. High-resolution time-lapse micro-tomography was used as a tool to create models of the inner structure and deformed shape in pre-defined deformation steps. First, peripheral areas of vertebra specimen were embedded in polymethyl methacrylate to obtain proper boundary conditions of contact between specimen and loading plattens. Experimental loading device designed for application in X-ray setups was utilized to compress the vertebrae in several deformation steps. High-resolution micro-tomography scanning was carried out at each deformation step. Specimen was irradiated in tomography device equipped with microfocus X-ray tube with 5mm focal spot size and large area flat panel detector. Spatial resolution of reconstructed three-dimensional images was approximately 10mm. Digital volume correlation algorithm was utilized in order to assess displacements in the microstructure in every loading increment. Finite element model of vertebra was created from volumetric data reconstructed from tomography of the undeformed specimen. Simulated compressive test of the developed finite element model was performed in order to compare stiffness and displacements obtained by digital volume correlation and finite element simulation.
Workplace	Institute of Theoretical and Applied Mechanics
Contact	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Year of Publishing	2015
Electronic address	http://iopscience.iop.org/1748-0221/9/05/C05054

Number of the records: 1