Artefacts in CBCT: a review
Ralf Schulze,Ulrich Heil,D Groβ,D. D. Bruellmann,Egor Dranischnikow,Ulrich Schwanecke,Elmar Schoemer +6 more
TL;DR: The most prominent artefacts identified in the scientific literature are discussed and the existing knowledge on these artefacts is reviewed to discuss the basic three-dimensional reconstruction concept applied by today's CBCT scanners.
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Abstract: Artefacts are common in today's cone beam CT (CBCT). They are induced by discrepancies between the mathematical modelling and the actual physical imaging process. Since artefacts may interfere with the diagnostic process performed on CBCT data sets, every user should be aware of their presence. This article aims to discuss the most prominent artefacts identified in the scientific literature and review the existing knowledge on these artefacts. We also briefly review the basic three-dimensional (3D) reconstruction concept applied by today's CBCT scanners, as all artefacts are more or less directly related to it.
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Citations
The Efficacy of Immediate Implant Placement in Extraction Sockets for Alveolar Bone Preservation: A Clinical Evaluation Using Three-Dimensional Cone Beam Computerized Tomography and Resonance Frequency Analysis Value.
Ali Al Qabbani,Noor Hayati Abdul Razak,Sausan Al Kawas,Suzina Sheikh Abdul Hamid,Saad Wahbi,A R Samsudin +5 more
TL;DR: The insertion of immediate implants in fresh extraction sockets together with grafting the circumferential gap between the bony socket wall and the implant surface with bovine bone granules was able to preserve a greater amount of alveolar ridge volume when compared with an extraction socket that was left to heal in a conventional way.
Clinical implementation of kVCT-guided tomotherapy with ClearRT
Bin Yang,Hui Geng,Tien Yee Amy Chang,Mei-Yan Tse,Wai Wang Lam,Chengyi Huang,Tungho Wu,Ka Ki Lau,Kin Yin Cheung,George Chiu,Siu Ki Yu +10 more
TL;DR: In this article , a helical fan-beam kilovoltage computed tomography (kVCT) was recently introduced into Tomotherapy units and the clinical performance data regarding image acquisition time, nominal dose length product (DLP), registration time and registration corrections were extracted and compared.
Visibility of alveolar bone thicknesses on CBCT images–a study on minimum bone requirements using various reconstruction techniques, viewing modes, and resolutions
Camilla Lennholm,H. Andreasen,Anna Westerlund,Henrik Hautop Lund +3 more
TL;DR: This study evaluates CBCT image visibility of alveolar bone thickness, finding that high-resolution MPR grey scale images are most valid, with 0.173mm buccal and 0.356mm lingual bone widths required for visibility, and 3D-rendered images having lowest validity.
Cone-beam Computed Tomography for Detecting Vertical Root Fractures in Endodontically Treated Teeth: A Systematic Review
TL;DR: There is currently insufficient evidence to suggest that CBCT is a reliable test in detecting VRFs in endodontically treated teeth.
Influence of an adjacent zirconium implant, tube current, and metal artifact reduction algorithm on horizontal root fracture diagnosis in cone beam computed tomography
Débora Costa Ruiz,Larissa de Oliveira Reis,Rocharles Cavalcante Fontenele,Murilo Miranda-Viana,Amanda Farias-Gomes,Deborah Queiroz Freitas +5 more
TL;DR: The presence of the zirconium implant impairs HRF detection, and Settings of 8 or 10 mA improveHRF detection regardless MARA condition without the implant, and with an adjacent implant, 10 m a without MARA is recommended to improve diagnostic performance.
References
•Book
Principles of Computerized Tomographic Imaging
Avinash C. Kak,Malcolm Slaney,Ge Wang +2 more
- 01 Jan 1987
TL;DR: Properties of Computerized Tomographic Imaging provides a tutorial overview of topics in tomographic imaging covering mathematical principles and theory and how to apply the theory to problems in medical imaging and other fields.
6.5K
Practical cone-beam algorithm
TL;DR: In this article, a convolution-backprojection formula is deduced for direct reconstruction of a three-dimensional density function from a set of two-dimensional projections, which has useful properties, including errors that are relatively small in many practical instances and a form that leads to convenient computation.
•Journal Article
Practical cone-beam algorithm
TL;DR: In this article, a convolution-backprojection formula is deduced for direct reconstruction of a three-dimensional density function from a set of two-dimensional projections, which has useful properties, including errors that are relatively small in many practical instances and a form that leads to convenient computation.
5.7K
Artifacts in CT: Recognition and Avoidance
Julia F. Barrett,Nicholas Keat +1 more
TL;DR: To optimize image quality, it is necessary to understand why artifacts occur and how they can be prevented or suppressed, and how design features incorporated into modern CT scanners minimize some types of artifacts.
1.6K
Fast calculation of the exact radiological path for a three-dimensional CT array.
TL;DR: A new exact algorithm is presented that considers the CT data as consisting of the intersection volumes of three orthogonal sets of equally spaced, parallel planes, for a three-dimensional CT array of N3 voxels.
1.6K