scholarly journals Detection of trabecular bone microdamage by micro-computed tomography

2007 ◽  
Vol 40 (15) ◽  
pp. 3397-3403 ◽  
Author(s):  
Xiang Wang ◽  
Daniel B. Masse ◽  
Huijie Leng ◽  
Kevin P. Hess ◽  
Ryan D. Ross ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Trabecular Bone ◽  
Micro Computed Tomography ◽  
Bone Microdamage

Cortical and trabecular bone parameters from HR-Pqct images at the Tibia: a local comparison with synchrotron radiation micro-computed tomography

2013 ◽  
Author(s):  
Agnes Ostertag ◽  
Francoise Peyrin ◽  
Sylvie Fernandez ◽  
Jean-Denis Laredo ◽  
Vernejoul Marie-Christine De ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Synchrotron Radiation ◽  
Trabecular Bone ◽  
Micro Computed Tomography ◽  
Bone Parameters ◽  
Local Comparison

The Effect of Trabecular Bone on the Mechanical Response of Human Mandible with Implant

2014 ◽  
Vol 695 ◽  
pp. 588-591
Author(s):  
Khairul Salleh Basaruddin ◽  
Ruslizam Daud
Keyword(s):  
Computed Tomography ◽  
Finite Element ◽  
Trabecular Bone ◽  
Static Analysis ◽  
Load Distribution ◽  
Mechanical Response ◽  
Three Dimensional ◽  
Fe Model ◽  
Micro Computed Tomography ◽  
Bone Specimen

This study aims to investigate the influence of trabecular bone in human mandible bone on the mechanical response under implant load. Three dimensional voxel finite element (FE) model of mandible bone was reconstructed from micro-computed tomography (CT) images that were captured from bone specimen. Two FE models were developed where the first consists of cortical bone, trabecular bone and implants, and trabecular bone part was excluded in the second model. A static analysis was conducted on both models using commercial software Voxelcon. The results suggest that trabecular bone contributed to the strength of human mandible bone and to the effectiveness of load distribution under implant load.

Trabecular Bone Ratio of Mandible Using Micro-Computed Tomography in Korean

2010 ◽  
Vol 21 (3) ◽  
pp. 920-924 ◽  
Author(s):  
Sung-Yoon Won ◽  
Sung-Hyun Kim ◽  
Sung-Tae Kim ◽  
Doo-Jin Paik ◽  
Wu-Chul Song ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Trabecular Bone ◽  
Micro Computed Tomography

scholarly journals Quantifying Subresolution 3D Morphology of Bone with Clinical Computed Tomography

2019 ◽  
Vol 48 (2) ◽  
pp. 595-605 ◽  
Author(s):  
S. S. Karhula ◽  
M. A. J. Finnilä ◽  
S. J. O. Rytky ◽  
D. M. Cooper ◽  
J. Thevenot ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Statistical Model ◽  
Trabecular Bone ◽  
Volume Fraction ◽  
Ex Vivo ◽  
Bone Volume ◽  
Micro Computed Tomography ◽  
Bone Volume Fraction ◽  
Model Combining ◽  
Occurrence Matrix

Abstract The aim of this study was to quantify sub-resolution trabecular bone morphometrics, which are also related to osteoarthritis (OA), from clinical resolution cone beam computed tomography (CBCT). Samples (n = 53) were harvested from human tibiae (N = 4) and femora (N = 7). Grey-level co-occurrence matrix (GLCM) texture and histogram-based parameters were calculated from CBCT imaged trabecular bone data, and compared with the morphometric parameters quantified from micro-computed tomography. As a reference for OA severity, histological sections were subjected to OARSI histopathological grading. GLCM and histogram parameters were correlated to bone morphometrics and OARSI individually. Furthermore, a statistical model of combined GLCM/histogram parameters was generated to estimate the bone morphometrics. Several individual histogram and GLCM parameters had strong associations with various bone morphometrics (|r| > 0.7). The most prominent correlation was observed between the histogram mean and bone volume fraction (r = 0.907). The statistical model combining GLCM and histogram-parameters resulted in even better association with bone volume fraction determined from CBCT data (adjusted R2 change = 0.047). Histopathology showed mainly moderate associations with bone morphometrics (|r| > 0.4). In conclusion, we demonstrated that GLCM- and histogram-based parameters from CBCT imaged trabecular bone (ex vivo) are associated with sub-resolution morphometrics. Our results suggest that sub-resolution morphometrics can be estimated from clinical CBCT images, associations becoming even stronger when combining histogram and GLCM-based parameters.

Microstructural study of the lunate in stage III Kienböck’s disease with micro-computed tomography imaging

2016 ◽  
Vol 42 (1) ◽  
pp. 71-77 ◽  
Author(s):  
G. Xiong ◽  
Z. Xiao ◽  
H. Wang ◽  
S. Guo ◽  
J. Tao
Keyword(s):  
Computed Tomography ◽  
Trabecular Bone ◽  
Bone Structure ◽  
Stage Iii ◽  
Micro Computed Tomography ◽  
Secondary Fracture ◽  
Kienböck’S Disease ◽  
Kienböck's Disease ◽  
Eventual Collapse ◽  
Kienbock’S Disease

Seventeen fresh lunates with stage III Kienböck’s disease were scanned with micro-computed tomography. Four regions of interest were selected to measure trabecular parameters, which were compared with those from normal lunates. Within the three regions in the distal surface, there was more compact trabecular bone in the middle region when compared with the palmar and dorsal regions. In the central part, the trabeculae of the Kienböck’s lunates were much thicker than those in normal lunates. The diameters of the palmar nutrient foramina of the Kienböck’s lunates were significantly smaller than those in normal lunates. In affected lunates, the bony disruptions were mostly located in the palmar or dorsal areas, which were shown from trabecular bone structure analysis to be structurally weaker. This leads to separation of the distal part of the fractured bone, disruption of the blood supply, poor bone remodelling and proneness to secondary fracture and eventual collapse.

scholarly journals Comparison of anterior and posterior trabecular bone microstructure of human mandible using cone-beam CT and micro CT

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Norliza Ibrahim ◽  
Azin Parsa ◽  
Bassam Hassan ◽  
Paul van der Stelt ◽  
Rabiah A. Rahmat ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Trabecular Bone ◽  
Structural Parameters ◽  
Cone Beam Ct ◽  
Imaging Systems ◽  
Cone Beam ◽  
Micro Computed Tomography ◽  
Trabecular Thickness ◽  
Trabecular Bone Microstructure ◽  
Trabecular Number

Abstract Background The aim of this study was to compare the trabecular bone microstructures of anterior and posterior edentulous regions of human mandible using cone-beam computed tomography (CBCT) and micro computed tomography (µCT). Methods Twenty volumes of interests consisting of six anterior and fourteen posterior edentulous regions were obtained from human mandibular cadavers. A CBCT system with a resolution of 80 µm (3D Accuitomo 170, J. Morita, Kyoto, Japan) and a µCT system with a resolution of 35 µm (SkyScan 1173, Kontich, Belgium) were used to scan the mandibles. Three structural parameters namely, trabecular number (Tb.N), trabecular thickness (Tb.Th), and trabecular separation (Tb.Sp) were analysed using CTAn software (v 1.11, SkyScan, Kontich, Belgium). For each system, the measurements obtained from anterior and posterior regions were tested using independent sample t-test. Subsequently, all measurements between systems were tested using paired t-test. Results In CBCT, all parameters of the anterior and posterior mandible showed no significant differences (p > 0.05). However, µCT showed a significant different of Tb.Th (p = 0.023) between anterior and posterior region. Regardless of regions, the measurements obtained using both imaging systems were significantly different (p ≤ 0.021) for Tb.Th and Tb.N. Conclusions The current study demonstrated that only the variation of Tb.Th between anterior and posterior edentulous region of mandible can be detected using µCT. In addition, CBCT is less feasible than µCT in assessing trabecular bone microstructures at both regions.

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