scholarly journals Assessment of metal artefact reduction around dental titanium implants in cone beam CT

2014 ◽  
Vol 43 (7) ◽  
pp. 20140019 ◽  
Author(s):  
A Parsa ◽  
N Ibrahim ◽  
B Hassan ◽  
K Syriopoulos ◽  
P van der Stelt
Keyword(s):  
Cone Beam Ct ◽  
Titanium Implants ◽  
Cone Beam ◽  
Metal Artefact Reduction ◽  
Metal Artefact ◽  
Artefact Reduction

scholarly journals Evaluation of the dental spectral cone beam CT for metal artefact reduction

2019 ◽  
Vol 48 (2) ◽  
pp. 20180044
Author(s):  
Ling Zhu ◽  
Yi Chen ◽  
Jie Yang ◽  
Xiaofeng Tao ◽  
Yan Xi
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Metal Artefact Reduction ◽  
Metal Artefact ◽  
Artefact Reduction

scholarly journals Metal artefact reduction with cone beam CT: anin vitrostudy

2012 ◽  
Vol 41 (3) ◽  
pp. 248-253 ◽  
Author(s):  
BB Bechara ◽  
WS Moore ◽  
CA McMahan ◽  
M Noujeim
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Metal Artefact Reduction ◽  
Metal Artefact ◽  
Artefact Reduction

scholarly journals Difference in the artefacts production and the performance of the metal artefact reduction (MAR) tool between the buccal and lingual cortical plates adjacent to zirconium dental implant

2019 ◽  
Vol 48 (8) ◽  
pp. 20190058 ◽  
Author(s):  
Eduarda Helena Leandro Nascimento ◽  
Rocharles Cavalcante Fontenele ◽  
Gustavo Machado Santaella ◽  
Deborah Queiroz Freitas
Keyword(s):  
Cone Beam Ct ◽  
Ct Scans ◽  
Cone Beam ◽  
Control Group ◽  
Medullary Bone ◽  
Trabecular Thickness ◽  
Metal Artefact Reduction ◽  
Water Region ◽  
Metal Artefact ◽  
Artefact Reduction

Objectives: To quantify the artefacts production and the performance of the metal artefact reduction (MAR) tool, enabled before or after the acquisition, in cortical plates (buccal and lingual) and other regions adjacent to zirconium implants. Methods: Cone beam CT scans were acquired using the OP300 Maxio unit before (control group) and after (implant group) the insertion of a zirconium implant into the posterior region of a dry mandible. Three conditions of MAR tool were tested: “without MAR”, with “MAR activated after acquisition”, and with “MAR activated before acquisition”. The standard deviation (SD), contrast-to-noise ratio (CNR) and voxel values were calculated in the buccal and lingual cortical plates, medullary bone and water region, close to the implant. The structural bone analysis was performed in the medullary bone close to the implant. Results: Overall, in control and implant groups, the lingual cortical had higher SD, lower CNR and lower voxel values than the buccal cortical, regardless of the MAR condition (p < 0.05). Implant caused higher SD values and lower voxel values in adjacent regions “without MAR” (p < 0.05). MAR activation decreased SD and changed voxel values when the implant was present, regardless of MAR activation mode (p < 0.05). The activation of MAR increased the trabecular thickness values for the implant group (p < 0.05). Conclusion: The expression of artefacts adjacent to zirconium implants is greater in the lingual than in the buccal cortical. The greater the expression of artefacts in this region, the greater the effectiveness of the MAR tool in homogenizing the grey values, regardless of the time of its activation.

scholarly journals Are metal artefact reduction algorithms effective to correct cone beam CT artefacts arising from the exomass?

2019 ◽  
Vol 48 (3) ◽  
pp. 20180290 ◽  
Author(s):  
Amanda Pelegrin Candemil ◽  
Benjamin Salmon ◽  
Deborah Queiroz Freitas ◽  
Glaucia Maria Bovi Ambrosano ◽  
Francisco Haiter-Neto ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Metal Artefact Reduction ◽  
Metal Artefact ◽  
Artefact Reduction

scholarly journals Combination of high-resolution cone beam computed tomography and metal artefact reduction software: a new image fusion technique for evaluating intracranial stent apposition after aneurysm treatment

2019 ◽  
Vol 12 (9) ◽  
pp. e230687 ◽  
Author(s):  
Ichiro Yuki ◽  
Toshihiro Ishibashi ◽  
Chihebeddine Dahmani ◽  
Naoki Kato ◽  
Ayako Ikemura ◽  
...  
Keyword(s):  
High Resolution ◽  
Image Fusion ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Cone Beam ◽  
Brain Aneurysm ◽  
Metal Artefact Reduction ◽  
Aneurysm Treatment ◽  
Metal Artefact ◽  
Artefact Reduction

We introduce a new imaging technique to improve visualisation of stent apposition after endovascular treatment of brain aneurysms employing high-resolution cone beam CT and three-dimensional digital subtraction angiography. After performing a stent-assisted coil embolisation of brain aneurysm, the image datasets were processed with a metal artefact reduction software followed by the automated image fusion programmes. Two patients who underwent aneurysm coiling using a Neuroform stent were evaluated. The reconstructed 3D images showed a detailed structure of the stent struts and identified malappositions of the deployed stents. Case 1 showed good apposition on the outer curvature side of the carotid siphon, while the inner curvature side showed prominent malapposition. Case 2, with multiple aneurysms, showed good apposition on both outer and inner curvature sides, although inward prolapse of the struts was observed. This new imaging technique may help evaluate stent apposition after the endovascular aneurysm treatment.

Use of the metal artefact reduction tool in the identification of fractured endodontic instruments in cone‐beam computed tomography

2019 ◽  
Vol 53 (4) ◽  
pp. 506-512 ◽  
Author(s):  
E. D. Costa ◽  
D. M. Brasil ◽  
P. M. Queiroz ◽  
F. S. Verner ◽  
R. B. Junqueira ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Metal Artefact Reduction ◽  
Metal Artefact ◽  
Artefact Reduction
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