scholarly journals The effect of scan parameters on cone beam CT trabecular bone microstructural measurements of the human mandible

2013 ◽  
Vol 42 (10) ◽  
pp. 20130206 ◽  
Author(s):  
N Ibrahim ◽  
A Parsa ◽  
B Hassan ◽  
P van der Stelt ◽  
I H A Aartman ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Cone Beam Ct ◽  
Cone Beam

Association of cortical shape of the mandible on panoramic radiographs with mandibular trabecular bone structure in Japanese adults: a cone-beam CT-image analysis

2013 ◽  
Vol 30 (2) ◽  
pp. 160-167 ◽  
Author(s):  
Noriyasu Mochizuki ◽  
Noriyuki Sugino ◽  
Tadashi Ninomiya ◽  
Nobuo Yoshinari ◽  
Nobuyuki Udagawa ◽  
...  
Keyword(s):  
Image Analysis ◽  
Trabecular Bone ◽  
Bone Structure ◽  
Cone Beam Ct ◽  
Trabecular Bone Structure ◽  
Cone Beam ◽  
Ct Image ◽  
Panoramic Radiographs ◽  
Japanese Adults ◽  
Ct Image Analysis

Accuracy of trabecular bone microstructural measurement at planned dental implant sites using cone-beam CT datasets

2013 ◽  
Vol 25 (8) ◽  
pp. 941-945 ◽  
Author(s):  
Norliza Ibrahim ◽  
Azin Parsa ◽  
Bassam Hassan ◽  
Paul van der Stelt ◽  
Irene H.A. Aartman ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Dental Implant ◽  
Cone Beam Ct ◽  
Cone Beam

scholarly journals A comparative evaluation of cone beam CT and micro-CT on trabecular bone structures in the human mandible

2013 ◽  
Vol 42 (8) ◽  
pp. 20130145 ◽  
Author(s):  
J Van Dessel ◽  
Y Huang ◽  
M Depypere ◽  
I Rubira-Bullen ◽  
F Maes ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Comparative Evaluation ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Micro Ct ◽  
Bone Structures

The assessment of trabecular bone parameters and cortical bone strength: A comparison of micro-CT and dental cone-beam CT

2013 ◽  
Vol 46 (15) ◽  
pp. 2611-2618 ◽  
Author(s):  
Jui-Ting Hsu ◽  
Shun-Ping Wang ◽  
Heng-Li Huang ◽  
Ying-Ju Chen ◽  
Jay Wu ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Cortical Bone ◽  
Bone Strength ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Micro Ct ◽  
Bone Parameters

scholarly journals ­­­­­Comparison of Anterior and Posterior Trabecular Bone Microstructure of Human Mandible Using Cone-Beam CT and Micro CT

2020 ◽  
Author(s):  
Norliza Ibrahim ◽  
Azin Parsa ◽  
Bassam Hassan ◽  
Paul der Stelt ◽  
Siti Mazlipah Ismail ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Structural Parameters ◽  
Cone Beam Ct ◽  
Bone Microstructure ◽  
Imaging Systems ◽  
Cone Beam ◽  
Micro Ct ◽  
Trabecular Thickness ◽  
Trabecular Bone Microstructure ◽  
Trabecular Number

Abstract Objective The aim of this study was to compare the trabecular bone microstructures of anterior and posterior edentulous regions of human mandible using cone-beam CT (CBCT) and micro CT (µCT).Materials and 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 micro CT. In addition, CBCT is less feasible than micro CT in assessing trabecular bone microstructures at both regions.

scholarly journals Predicting Trabecular Bone Stiffness from Clinical Cone-Beam CT and HR-pQCT Data; an In Vitro Study Using Finite Element Analysis

PLoS ONE ◽  
2016 ◽  
Vol 11 (8) ◽  
pp. e0161101 ◽  
Author(s):  
Eva Klintström ◽  
Benjamin Klintström ◽  
Rodrigo Moreno ◽  
Torkel B. Brismar ◽  
Dieter H. Pahr ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Trabecular Bone ◽  
Cone Beam Ct ◽  
In Vitro Study ◽  
Vitro Study ◽  
Cone Beam ◽  
Element Analysis ◽  
Bone Stiffness

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.

scholarly journals Contribution of Statistical Iterative Reconstruction Algorithm For Orthopaedic Applications: A Study With A Cone-Beam CT Prototype

2021 ◽  
Author(s):  
Stéphanie Uk ◽  
Fanny Morin ◽  
Valerie Bousson ◽  
Rémy Nizard ◽  
Guillaume Bernard ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Orthopaedic Surgery ◽  
Signal To Noise Ratio ◽  
Cone Beam Ct ◽  
Qualitative Assessment ◽  
Cone Beam ◽  
Angular Range ◽  
Grey Level ◽  
Signal To Noise

Abstract Three-dimensional reconstruction for image-guidance in orthopaedic surgery necessitates a high degree of geometrical precision but not necessary structure details. With the aim to reduce as much as possible the dose, a cone beam CT prototype was tested with decreasing intensities, the number of projections or different angular range. We tested two methods of reconstruction: classical Feldkamp-Davis-Kress (FDK) reconstruction and the Simultaneous Algebraic Reconstruction Technic with Total Variation (SART-TV). Based on this protocol, on a knee cadaveric specimen, we combined qualitative assessment performed by radiologists and orthopedic surgeons, objective metrics of image quality such as signal-to-noise ratio, or related to bone geometric contour, grey level restitution and texture of trabecular bone, and finally the quality of joint space segmentation. Objective indicators related to signal-to-noise ratio, the quality of geometry and segmentation have shown better results for SART-TV than FDK in case of decrease projections number and angular range. On the contrary, qualitative assessment, and indexes about grey level restitution and textural quality of trabecular bone produced the best results for FDK reconstruction. These results showed that SART-TV reconstruction has a good capability to restore the geometry in case of low dose protocol and consequently could be a good candidate for orthopaedic surgery.

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