Relevant bibliographies by topics / CBCT

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
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  5. Conference papers
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Academic literature on the topic 'CBCT'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 June 2025

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Journal articles on the topic "CBCT"

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Petsaros, Sotirios, Emmanouil Chatzipetros, Catherine Donta, et al. "Scattered Radiation Distribution Utilizing Three Different Cone-Beam Computed Tomography Devices for Maxillofacial Diagnostics: A Research Study." Journal of Clinical Medicine 12, no. 19 (2023): 6199. http://dx.doi.org/10.3390/jcm12196199.

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This study aimed to estimate scattered radiation and its spatial distribution around three cone-beam computed tomography (CBCT) devices, in order to determine potential positions for an operator to stand if they needed to be inside the CBCT room. The following devices were tested: Morita Accuitomo (CBCT1), Newtom Giano HR (CBCT2), Newtom VGi (CBCT3). Scattered radiation measurements were performed using different kVp, mA, and Field of View (FOV) options. An anthropomorphic phantom (NATHANIA) was placed inside the X-ray gantry to simulate clinical conditions. Scattered measurements were taken with the Inovision model 451P Victoreen ionization chamber once placed at fixed distances from each irradiation isocenter, away from the primary beam. A statistically significant (p < 0.001) difference was found in the mean value of the scattered radiation estimations between the CBCT devices. Scattered radiation was reduced with a different rate for each CBCT device as distance was increased. For CBCT1 the reduction was 0.047 μGy, for CBCT2 it was 0.036 μGy, and for CBCT3 it was 0.079 μGy, for every one meter from the X-ray gantry. Therefore, at certain distances from the central X-ray, the scattered radiation was below the critical level of 1 mGy, which is defined by the radiation protection guidelines as the exposure radiation limit of the general population. Consequently, an operator could stay inside the room accompanying the patient being scanned, if necessary.
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Henein, Claudy, Shannu K. Bhatia, and Nicholas Drage. "The Use of Cone Beam Computed Tomographic Imaging in a Paediatric Dentistry Department." Oral 1, no. 2 (2021): 45–55. http://dx.doi.org/10.3390/oral1020006.

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Cone beam computed tomography (CBCT) is an emerging radiographic imaging modality. The diagnostic benefit must exceed the individual detriment that its generally higher radiation exposure may cause. Since limited studies exist on the use and impact of CBCT in paediatric dentistry, a service evaluation was carried out to explore the reasons for CBCT referral and to identify its impact on the treatment plan and/or management in a paediatric dentistry department. Clinical records for all paediatric patients who underwent a CBCT were reviewed, to identify the reason for referral and its influence on diagnosis or management, by comparing the provisional treatment plan with the definitive treatment plan, post-CBCT. A total of 130 paediatric patients underwent CBCT in a 12-month period, of which 52 satisfied the inclusion criteria. CBCTs were most commonly requested for the localisation of unerupted/impacted teeth 14/52 (27%), assessment of supernumerary teeth 12/52 (23%), and to investigate root resorption 9/52 (17%). All CBCTs provided additional information that assisted treatment planning, diagnosis, or management and, most significantly, 16/52 (31%) of treatment plans were changed based on CBCT findings. All CBCTs requested in this study were justified and confirmed or influenced the management of paediatric patients, ultimately reducing the risk of complications and further treatment.
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Kuriyama, Takumi, Nobuyuki Sakai, Norimitsu Niida, et al. "Dose reduction in cone-beam CT scanning for intracranial stent deployment before coil embolization of intracranial wide-neck aneurysms." Interventional Neuroradiology 22, no. 4 (2016): 420–25. http://dx.doi.org/10.1177/1591019916632489.

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Purpose Flat panel detector (FD)-equipped angiography machines are increasingly used for neuro-angiographic imaging. During intracranial stent-assisted coil embolization procedures, it is very important to clearly and quickly visualize stent shape after deployment in the vessel. It is necessary to quickly visualize stents by cone-beam computed tomography (CBCT). The aim of this study was to compare CBCTs at 10 and 20 s, and to confirm that this method is useful for neuro-endovascular treatment procedures. Materials and methods We treated 30 patients with wide-necked intracranial aneurysms with a flexible, self-expanding neurovascular stent and subsequent aneurysm embolization with platinum micro-coils. We performed the CBCT after stent deployment. We compared the 10 s and 20 s CBCTs, using the full width one-half maximum (FWHM) visualization. Results Accurate stent placement with subsequent coil occlusion of the aneurysms was feasible in all patients. Stent struts were clearly visualized on both 10 s and 20 s CBCTs. Importantly, 10 s CBCT can reduce the radiation dose by about 42%, compared with 20 s CBCT. Performing 10 s CBCT with a 14% dilution of the contrast medium may significantly improve image acquisition during stent-assisted coil embolization. Conclusions Reduced-dose, 10 s CBCT can visualize stents in clinical cases, while significantly reducing radiation exposure.
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Kawauchi, Satoru, Koichi Chida, Yusuke Hamada, and Wataro Tsuruta. "Image Quality and Radiation Dose of Conventional and Wide-Field High-Resolution Cone-Beam Computed Tomography for Cerebral Angiography: A Phantom Study." Tomography 9, no. 5 (2023): 1683–93. http://dx.doi.org/10.3390/tomography9050134.

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There has been an increase in the use of interventional neuroradiology procedures because of their non-invasiveness compared to surgeries and the improved image quality of fluoroscopy, digital subtraction angiography, and rotational angiography. Although cone-beam computed tomography (CBCT) images are inferior to multi-detector CT images in terms of low-contrast detectability and lower radiation doses, CBCT scans are frequently performed because of their accessibility. This study aimed to evaluate the image quality and radiation dose of two different high-resolution CBCTs (HR CBCT): conventional (C-HR CBCT) and wide-field HR CBCT (W-HR CBCT). The modulation transfer function (MTF), noise power spectrum (NPS), and contrast-to-noise ratio (CNR) were used to evaluate the image quality. On comparing the MTF of C-HR CBCT with a 256 × 256 matrix and that of W-HR CBCT with a 384 × 384 matrix, the MTF of W-HR CBCT with the 384 × 384 matrix was larger. A comparison of the NPS and CNR of C-HR CBCT with a 256 × 256 matrix and W-HR CBCT with a 384 × 384 matrix showed that both values were comparable. The reference air kerma values were equal for C-HR CBCT and W-HR CBCT; however, the value of the kerma area product was 1.44 times higher for W-HR CBCT compared to C-HR CBCT. The W-HR CBCT allowed for improved spatial resolution while maintaining the image noise and low-contrast detectability by changing the number of image matrices from 256 × 256 to 384 × 384. Our study revealed the image characteristics and radiation dose of W-HR CBCT. Given its advantages of low-contrast detectability and wide-area imaging with high spatial resolution, W-HR CBCT may be useful in interventional neuroradiology for acute ischemic stroke.
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Latifi, S., E. Moudi, F. Abesi, A. Minouei, M. Hozouri, and A. Bijani. "Comparison of Ultrasonography and Cone-Beam Computed Tomography Accuracy in Measuring the Soft Tissue Thickness of Maxillary and Mandibular Gingiva in a Sheep Model." Acta Medica Bulgarica 50, no. 4 (2023): 41–46. http://dx.doi.org/10.2478/amb-2023-0042.

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Abstract Background To date, few studies have compared the accuracy of cone-beam computed tomography (CBCT) and ultrasonography in measuring the soft tissue thickness of the maxillary and mandibular gingiva. Aims To compare the accuracy of ultrasonography and CBCT in measuring the soft tissue thickness of the maxillary and mandibular gingiva in a sheep model. Materials and Methods In this study, 38 different landmarks (26 points from the upper jaw and 12 points from the lower jaw) were evaluated. The gingival soft tissue thickness was measured using a digital caliper, ultrasonography, and standard and high-resolution CBCTs. The measurements were finally compared with each other. Results Regarding the thicknesses < 2 mm, no significant difference was seen between the measurements of the digital caliper and ultrasonography (mean difference < 0.1 mm, p = 0.140). Conversely, data analysis indicated significant differences between CBCTs measurements and digital caliper and ultrasonography measurements. Regarding thicknesses > 2 mm, digital caliper measurement was not significantly different from ultrasonography and high-resolution CBCT measurements (mean differences < 0.1 mm) but differed from the standard CBCT measurement. Also, a significant difference was observed between ultrasonography and standard CBCT measurements but not between ultrasonography and high-resolution CBCT (mean differences < 0.1 mm). Finally, mean differences between standard and high-resolution CBCT measurements were statistically significant. Conclusion According to the results, ultrasonography can be a reliable option for measuring gingival soft tissues regardless of their thickness, while CBCT may be more suitable for thicker gingival tissues. Clinicians should carefully consider the measurement accuracy of different imaging methods when planning dental procedures.
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Rezende, Marlene Tavares de Lima, Francine Kühl Panzarella, Marjorie Fonseca Da Cunha, João Batista Souza, José Luiz Cintra Junqueira, and Cecília Pedroso Turssi. "Detection of root fractures in glass fiber and metal cast dowel-restored teeth: Accuracy of Computed Tomography vs Digital Radiography." Revista Odonto Ciência 31, no. 1 (2016): 6. http://dx.doi.org/10.15448/1980-6523.2016.1.16735.

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Objective: Detection of root fractures in dowel-restored teeth is challenging. Even though cone-beam computed tomography (CBCT) has shown higher sensitivity than intraoral radiography, artifacts may be generated in the presence of intraradicular posts. This study assessed the accuracy and reproducibility of CBCT and digital radiography (DR) in detecting root fractures in teeth restored with metal cast dowel and core (MCDC) or glass fiber dowel and resin composite core (GFDRCC). An additional aim was to evaluate the presence of beam hardening artifacts in CBCTs, especially in teeth restored with glass fiber dowel.Methods: Roots of bovine incisors were endodontically prepared, filled, sealed and randomly divided into two groups to receive MCCDC or GFDRCC (n=15). CBCTs and DRs were obtained prior to and after fracture induction.Results: CBCT were more accurate than DR in detecting root fractures in dowel-restored teeth. Beam hardening was observed in 100% of CBCT obtained from teeth restored with MCDC and in 93% of those in which GFDRCC had been used. Inter-observer agreement was moderate for both CBCT and DR images.Conclusion: Regardless of the dowel type, even though beam hardening had been observed in virtually all dowel-restored teeth, CBCT was the most accurate diagnostic tool in detecting root fractures.
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Rezende, Marlene Tavares de Lima, Francine Kühl Panzarella, Marjorie Fonseca Da Cunha, João Batista Souza, José Luiz Cintra Junqueira, and Cecília Pedroso Turssi. "Detection of root fractures in glass fiber and metal cast dowel-restored teeth: Accuracy of Computed Tomography vs Digital Radiography." Revista Odonto Ciência 31, no. 1 (2016): 6. http://dx.doi.org/10.15448/http://dx.doi.org/10.15448/1980-6523.2016.1.16735.

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Objective: Detection of root fractures in dowel-restored teeth is challenging. Even though cone-beam computed tomography (CBCT) has shown higher sensitivity than intraoral radiography, artifacts may be generated in the presence of intraradicular posts. This study assessed the accuracy and reproducibility of CBCT and digital radiography (DR) in detecting root fractures in teeth restored with metal cast dowel and core (MCDC) or glass fiber dowel and resin composite core (GFDRCC). An additional aim was to evaluate the presence of beam hardening artifacts in CBCTs, especially in teeth restored with glass fiber dowel.Methods: Roots of bovine incisors were endodontically prepared, filled, sealed and randomly divided into two groups to receive MCCDC or GFDRCC (n=15). CBCTs and DRs were obtained prior to and after fracture induction.Results: CBCT were more accurate than DR in detecting root fractures in dowel-restored teeth. Beam hardening was observed in 100% of CBCT obtained from teeth restored with MCDC and in 93% of those in which GFDRCC had been used. Inter-observer agreement was moderate for both CBCT and DR images.Conclusion: Regardless of the dowel type, even though beam hardening had been observed in virtually all dowel-restored teeth, CBCT was the most accurate diagnostic tool in detecting root fractures.
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Mizban, Laith, Mohamed El-Belihy, Mina Vaidyanathan, and Jackie Brown. "An audit and service evaluation of the use of cone beam computed tomography (CBCT) in a paediatric dentistry department." Dentomaxillofacial Radiology 48, no. 5 (2019): 20180393. http://dx.doi.org/10.1259/dmfr.20180393.

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Objectives: CBCT exposes the paediatric patient to a higher X-ray dose and risk than normal dental radiographs. This study has two components: an audit and service evaluation. The audit aims to assess whether the use of CBCT in a Paediatric Dentistry department at a London hospital complies with European guidelines (SEDENTEXCT). The service evaluation aims to explore the influence of CBCT on treatment planning. Methods: Two 6 month audit cycles were completed, where CBCT requests were audited to check whether image justifications comply with SEDENTEXCT. For the service evaluation, a total of 50 patient records were examined for the effect of CBCT on definitive treatment plans. Results: The first audit demonstrated 94% compliance with SEDENTEXCT. After instituting staff training in CBCT, compliance improved to 100%. In the service evaluation, 100% of CBCTs were found to provide information that impacted on the clinicians’ treatment planning, diagnosis and/or management. Of most significance, 44% of treatment plans were changed because of new information provided by CBCT. Conclusions: There are few studies investigating the use of CBCT in paediatric dentistry and the impact of this investigation. This service evaluation shows that CBCT can play an important role in optimising paediatric patient outcomes. The need for robust staff training in CBCT referrals to prevent over prescription is demonstrated in the audit cycles.
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Junqueira, Cintia Helena Zingaretti, Guilherme Janson, Marisa Helena Zingaretti Junqueira, Lucas Marzullo Mendes, Eduardo Esberard Favilla, and Daniela Gamba Garib. "Comparison between full face and hemifacial CBCT cephalograms in clinically symmetrical patients: a pilot study." Dental Press Journal of Orthodontics 20, no. 2 (2015): 83–89. http://dx.doi.org/10.1590/2176-9451.20.2.083-089.oar.

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INTRODUCTION: One of the advantages of cone-beam computed tomography (CBCT) is the possibility of obtaining images of conventional lateral cephalograms derived from partial or complete reconstruction of facial images. OBJECTIVE: This study aimed at comparing full face, right and left hemifacial CBCT cephalograms of orthodontic patients without clinical facial asymmetry. METHODS: The sample comprised nine clinically symmetrical patients who had pretreament full face CBCT. The CBCTs were reconstructed so as to obtain full face, right and left hemifacial cephalograms. Two observers, at two different times, obtained linear and angular measurements for the images using Dolphin 3D software. Dependent and independent t-tests were used to assess the reproducibility of measurements. Analysis of Variance and Kruskal-Wallis tests were used to compare the variables obtained in the CBCT derived cephalometric views. RESULTS: There was good reproducibility for CBCT scans and no statistically significant differences between measurements of full face, right and left hemifacial CBCT scans. CONCLUSIONS: Cephalometric measurements in full face, right and left hemifacial CBCT scans in clinically symmetrical patients are similar.
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Jonczyk, M., F. Collettini, D. Geisel, et al. "Radiation exposure during TACE procedures using additional cone-beam CT (CBCT) for guidance: safety and precautions." Acta Radiologica 59, no. 11 (2018): 1277–84. http://dx.doi.org/10.1177/0284185118761203.

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Background During transarterial chemoembolization (TACE), cone-beam computed tomography (CBCT) can be used for tumor and feeding vessel detection as well as postembolization CT imaging. However, there will be additional radiation exposure from CBCT. Purpose To evaluate the additional dose raised through CBCT-assisted guidance in comparison to TACE procedures guided with pulsed digital subtraction angiography (DSA) alone. Material and Methods In 70 of 140 consecutive patients undergoing TACE for liver cancer, CBCT was used to facilitate the TACE. Cumulative dose area product (DAP), cumulative kerma(air), DAP values of DSA, total and cine specific fluoroscopy times (FT) of 1375 DSA runs, and DAP of 91 CBCTs were recorded and analyzed using Spearman's correlation, Mann–Whitney U-test, and Kruskal–Wallis test. P values < 0.05 were considered significant. Results Additional CBCT increased DAP by 2% ( P = 0.737), kerma(air) by 24.6% ( P = 0.206), and FT by 0.02% ( P = 0.453). Subgroup analysis revealed that postembolization CBCT for detection of ethiodized oil deposits added more DAP to the procedure. Performing CBCT-assisted TACE, DSA until first CBCT contributed about 38% to the total DAP. Guidance CBCT acquisitions conduced to 6% of the procedure's DAP. Additional DSA for guidance after CBCT acquisition required approximately 46% of the mean DAP. The last DSA run for documentation purposes contributed about 10% of the DAP. Conclusion CBCT adds radiation exposure in TACE. However, the capability of CBCT to detect vessels and overlay in real-time during fluoroscopy facilitates TACE with resultant reduction of DAPs up to 46%.
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Dissertations / Theses on the topic "CBCT"

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Ribeiro, Nuno João Peixoto. "CBCT em endodontia." Master's thesis, [s.n.], 2014. http://hdl.handle.net/10284/4453.

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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária<br>A Endodontia é uma área da Medicina Dentária responsável pelo estudo da polpa dentária, de todo o sistema de canais radiculares e dos tecidos periapicais, bem como das doenças que os atingem. Em casos de alterações por cárie, fraturas dentárias, trauma dentário, trauma ortodôntico, lesões endo-periodontais, necessidades protéticas e outras patologias Endodônticas, o tratamento Endodôntico está indicado, visando a manutenção do dente na cavidade oral e a saúde dos tecidos periapicais. A imagiologia, área a que a Medicina Dentária recorre frequentemente, associa-se também, e cada vez mais, à Endodontia uma vez que tem vindo, nos últimos anos, a desenvolver novas tecnologias. A Tomografia Computurizada De Feixe Cónico (CBCT) é uma dessas técnicas imagiológicas relativamente recentes, sendo que é um sistema radiológico que possibilita a visualização de imagens tridimensionais de áreas que se pretendam examinar. Assim, com esta opção imagiológica tornar-se-á mais fácil o diagnóstico, tratamento e controlo de diversas patologias. Endodontics is an area of dentistry responsible for study of dental pulp, of the whole system of root canals and Periapical tissues, as well as the diseases that affect them. In cases of dental caries, dental fractures, trauma, endo-perio injuries, prosthetic needs and other pathologies, endodontic treatment may be the solution, as it helps to preserve and the periapical tissues health. Imagiology, it´s a common area used in the Dentistry, and it´s associated more and more to Endodontics, as it has been developing new techniques in the last several years. Cone Beam Computed Tomography (CBCT) is one of those new techniques, and it provides three-dimensional radiological image of the tooth areas that they wish to examine. This Imagiologic choice makes diagnosis and treatment of several deseases easier.
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La, Ciacera Giorgio. "Tomografia computerizzata a fascio conico (CBCT)." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12315/.

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Questo elaborato tratta le apparecchiature per la tomografia computerizzata a fascio conico (CBCT). Inizialmente sono descritte le caratteristiche dei raggi X ed il loro utilizzo in campo clinico, analizzando le varie tipologie di radiografia. Successivamente, si introduce il tomografo computerizzato, del quale si descrive la struttura e i principi di funzionamento, fino ad arrivare alla trattazione dei sistemi CBCT. Di questi viene studiato il funzionamento, il meccanismo di formazione delle immagini, gli ambiti di applicazione e i rispettivi vantaggi e limiti. Infine si analizza la dose di radiazione X emessa dall'apparecchiatura, studiando se il paziente corra rischi sottoponendosi a questi esami radiologici.
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Giles, David. "Cone-beam computed tomography: imaging dose during CBCT scan acquisition and accuracy of CBCT based dose calculations." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95242.

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Cone beam computed tomography (CBCT) is a recent development in radiotherapy for use in image guidance. Image guided radiotherapy using CBCT allows visualization of soft tissue targets and critical structures prior to treatment. Dose escalation is made possible by accurately localizing the target volume while reducing normal tissue toxicity. The kilovoltage x-rays of the cone beam imaging system contribute additional dose to the patient. In this study a 2D reference radiochromic film dosimetry method employing GAFCHROMICTM model XR-QA film is used to measure point skin doses and dose profiles from the Elekta XVI CBCT system integrated onto the Synergy linac. The soft tissue contrast of the daily CBCT images makes adaptive radiotherapy possible in the clinic. In order to track dose to the patient or utilize on-line replanning for adaptive radiotherapy the CBCT images must be used to calculate dose. A Hounsfield unit calibration method for scatter correction is investigated for heterogeneity corrected dose calculation in CBCT images. Three Hounsfield unit to density calibration tables are used for each of four cases including patients and an anthropomorphic phantom, and the calculated dose from each is compared to results from the clinical standard fan beam CT. The dose from the scan acquisition is reported and the effect of scan geometry and total output of the x-ray tube on dose magnitude and distribution is shown. The ability to calculate dose with CBCT is shown to improve with the use of patient specific density tables for scatter correction, and for high beam energies the calculated dose agreement is within 1%.<br>La tomographie par faisceaux conique (CBCT) informatisée a été récemment développée en radiothérapie pour l'utilisation de guidage par imagerie. La radiothérapie guidée par imagerie (IGRT) utilisant le CBCT, permet la visualisation des cibles à tissus mous et des structures critiques avant le traitement. En localisant précisément la cible, une « escalade » de dose est rendue possible et la toxicité des tissus sains est réduite. Les rayons-X à basse énergie (kilovoltage) du system d'imagerie du CBCT, contribue à une dose additionnelle pour le patient. Dans cette étude, une méthode dosimétrique utilisant un film 2D radiochromic (Gafchromic film, model XR-QA) a été employé pour mesurer des points de dose à la peau ainsi que des profiles de dose. Cette étude a été réalisée à l'aide d'un system d'Elekta XVI CBCT installé sur un accélérateur linéaire du Synergy. Le contraste des images quotidiennes du CBCT des tissus mous rend possible au niveau clinique l'utilisation de la radiothérapie adaptive. Dans le but de suivre la dose administrée au patient ou utiliser de la replanification en ligne pour la radiothérapie adaptive, les images CBCT doivent être utilisées pour le calcul de dose. Une calibration des unités de Hounsfield par méthode de correction de dispersion est examinée dans le cas de dose calculée dans des milieux hétérogènes pour les images CBCT. Trois unités de Hounsfield par table de calibration de densité sont utilisées pour chaque des quatre cas incluant des patients et un fantôme anthropomorphique. Le calcul de dose pour chaque cas est comparé avec les résultats cliniques standards de tomographie par faisceaux en éventail. La dose acquise avec le scanner est reportée et l'effet géométrique du scanner ainsi que le débit total du tube a rayon-X sur la magnitude et la distribution de la dose sont montrés. La capacité de calculer la dose avec un CBCT est présentée dans le but d'amélio
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Pichotka, Martin Peter [Verfasser], and Caroline [Akademischer Betreuer] Röhr. "Iterative CBCT reconstruction-algorithms for a spectroscopic Medipix-Micro-CT = Iterative CBCT Rekonstruktions-Algorithmen für ein spektroskopisches Medipix-Mikro-CT." Freiburg : Universität, 2014. http://d-nb.info/1115495674/34.

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Lalani, Sara. "Three-dimensional CBCT analysis of cranial base symmetry." Thesis, Boston University, 2015. https://hdl.handle.net/2144/37816.

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Thesis (MSD) --Boston University, Henry M. Goldman School of Dental Medicine, 2015 (Department of Orthodontics and Dentofacial Orthopedics).<br>Includes bibliographic references: leaves 37-42.<br>Background: Craniofacial skeletal asymmetry is a common finding in the general population that often goes undetected. Interest in this topic has led to many studies aimed at describing this type of asymmetry, its distribution and etioIogy. The cranial base, being cIosely related to the face and brain, is a key component in craniofacial growth and may also display varying amounts of asymmetry contributing to this anomaly. Though many studies have explored underlying skeletal asymmetry, most of them were limited by their two-dimensional method of investigation. With the advent of three-dimensional technology, more recent studies have had the advantage of studying the cranial base in its true anatomic form, resulting in greater accuracy of analysis. Despite access to this technoIogy, there is still a lack of literature regarding the cranial base in a normal population. Determining average skull base dimensions will provide a set of normative data that can be used as a reference for future studies. Material and Methods: Pre-treatment Cone Beam Computed Tomography (CBCT) films of 160 esthetic human subjects previously used by another investigator were screened for use in our current research. These DICOM files were imported into InVivoDental5.3 software (Anatomage[TM]; San Jose, Calif.) for screening and 70 CBCT scans were selected for analysis. All patients were classified as cervical vertebral stage 4 and above. The images were oriented in all three planes of space for uniformity and 14 bilateral anatomic landmarks were identified on each scan. A mid-sagittal reference plane was created using crista galli as the origin, and extending a perpendicular passing through the middle of the right and left clinoid points connected by a line, and through posterior points basion and opisthion. Each landmark was given an x-, y- and z- coordinate representing its three dimensional position and bilateral linear measurements to the reference plane were recorded using the software system. Statistical Analysis: InVivoDental5.3 software was used to calculate linear distances between each landmark and the mid-sagittal plane. This data was exported into Microsoft excel for analysis. Descriptive statistics of our sample and paired t-tests with a 5% significance level, or p value of 0.05, were performed. Results: The means of the right and left measurements of each bilateral landmark were calculated along with their standard deviations. A comparison between right and left means was accomplished with the use of paired t-tests. 12 1andmarks did not show a statistical difference in their locations on either side of the mid-sagittal plane. However, the means of 2 landmarks were found to be statistically significant. These were euryon (p = 0.01) and the jugular foramen (p = 0.00) Conclusion: The overall trend of our data indicated that the cranial base in a normal population, without craniofacial anomaly, displays symmetry, with the exception of the location of euryon and the jugular foramen. These findings are in accordance with those of similar three-dimensional studies. It is likely that the significant findings were due to tracing error, given the indiscrete location of euryon and the large, relatively asymmetric shape of the jugular foramen. However, if these structures are truly asymmetric, we can infer from our sample of symmetric patients, that there is no clinical relevance. Further studies with an increased sample size, additional landmarks or a more discrete sample can be performed to continue describing the skull base. The results of this study offer valuable reference data that can be used as a baseline for future studies.
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Katkar, Rujuta Amol. "Comparison of observer reliability of three-dimensional cephalometric landmark identification on subject images from Galileos and i-CAT CBCT." Thesis, University of Iowa, 2011. https://ir.uiowa.edu/etd/3478.

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Zimmerman, Jason Noah. "Reliability of upper pharyngeal airway assessment using dental CBCT." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62653.

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Introduction: Upper airway analysis is an often-cited use of CBCT imaging in orthodontics, however the reliability of airway measurements using this technology is not fully understood. The purpose of this study was to determine the intra-examiner and inter-examiner reliability of the complete process of volumetric and cross-sectional area assessments of the upper airway using CBCT imaging. Methods: Five examiners of varying levels of education and clinical experience performed manual orientation, slice and threshold selection, and measured nasopharyngeal, oropharyngeal, hypopharyngeal, and total upper pharyngeal airway volumes in addition to minimum cross-sectional area on the CBCT images of 10 patients. All measurements were repeated after 4-weeks. Intra and inter-examiner reliability was calculated using ICC and 95% CI. Results: Threshold selection showed poor intra and inter-examiner reliability, while minimum cross-sectional area showed moderate intra and poor inter-examiner reliability. Intra-examiner reliability of volumetric measurements varied based on the anatomical region assessed with ICC ranging from 0.747-0.976, and was worst for hypopharynx and best for the oropharynx. Inter-examiner reliability of volume measurements was generally lower, with ICC ranging from 0.175-0.945, and was worst for nasopharynx and best for the oropharynx. Conclusions: This study, for the first time, assessed the reliability of upper airway analysis with CBCT when all steps of image processing and measurement are performed by each examiner. Reliability improved with examiner experience, though was generally low for the hypopharynx and nasopharynx volumes and overall minimal cross sectional area. The oropharyngeal volume was the only parameter to have excellent intra-examiner and inter-examiner reliability.<br>Dentistry, Faculty of<br>Graduate
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Junes, Prado Luisa. "Utilización de CBCT en retratamiento endodóntico selectivo no quirúrgico." Master's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2018. http://hdl.handle.net/10757/625916.

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El retratamiento de canales radiculares es una alternativa ante el fracaso endodóntico. Este procedimiento tiene como objetivo reducir los síntomas que pueden presentarse o agravarse posterior al tratamiento de endodoncia. El procedimiento del retratamiento de canales sigue la premisa que aparentemente la calidad del material de obturación en todo el sistema de canales es deficiente, por consiguiente, todo el material debe ser retirado. Actualmente, con mejores técnicas de análisis imagenológico es posible identificar el origen de la lesión apical, por lo tanto, es posible seleccionar los canales pulpares con tratamiento deficiente y poder ser tratados de forma individual. De esta manera, el retratamiento selectivo de canales podría evitar el desgaste innecesario de canales en buen estado.<br>Root canal Retreatment is an alternative in the face off endodontic failure. This procedure aims to reduce the symptoms that may occur or worsen after the endodontic treatment. The root canal retreatment procedure follows the premise that apparently the quality of the filling material in the entire canal system is deficient, therefore, all the material must be removed. Currently, with better techniques of image analysis it is possible to identify the origin of the apical lesion, therefore, it is possible to select the pulp canals with poor treatment and be able to treat them individually. In this way, the selective root canal retreatment could avoid the unnecessary wear of root canals in good condition.<br>Trabajo académico
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Wood, Ryan LaDell. "Factors Affecting Alveolar Bone Height Measurements from CBCT Images." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1331044145.

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Woland, Bradley David. "CBCT-derived norms for tip and torque in Caucasians." Thesis, Boston University, 2014. https://hdl.handle.net/2144/37824.

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Thesis (MSD) --Boston University, Henry M. Goldman School of Dental Medicine, 2014 (Department of Orthodontics and Dentofacial Orthopedics).<br>Includes bibliographic references: leaves 38-40.<br>Background: Previous CBCT studies have established standards for mesiodistal angulations and faciolingual inclinations of the dentition in a non-Caucasian population. These standards help ensure proper root positioning, since they are not based solely on the clinical crowns. Objective: to use the USC root vector analysis to measure the tip and torque of teeth to establish Caucasian norms. Methods: We measured and obtained mean mesiodistal and faciolingual angulations from each whole tooth from 34 pretreatment and 43 previously treated Caucasian patients, by using the University of Southern California root vector analysis program in Dolphin 3D. We used descriptive statistics to present normal torque and tip values. Two-Sample t-test was executed to compare right tip and torque values to the left side. One sample t-test was used to compare our Caucasian sample to the multi-ethnic sample in Tong et al. paper, and to compare pretreatment to post-treatment patients within the Caucasian group. Results: Comparing right to the left tip and torque values in our sample showed no significant difference (P[greater than]0.05). We compared our study sample to the USC sample norm and we found that there was statistical significant difference in almost all tip and torque values (P[less than]0.05). We found no statistically significant difference in angulation of teeth between treated and untreated Caucasian patients. Conclusion: We measured and obtained mean mesiodistal and faciolingual angulations from each whole tooth from 34 pretreatment and 43 previously treated Caucasian patients′ by using the University of Southem California root vector analysis program in Dolphin 3D. When comparing the right side to the left side of the treated and untreated Caucasian groups, there was no statistically significant difference between the measurements for either tip or torque. We found a statistically significant difference in angulation of teeth between Caucasian and USC populations. We found no statistically significant difference in angulation of teeth between treated and untreated Caucasian patients.
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Books on the topic "CBCT"

1

Pyle, Michael A. TOEFL CBT: TOEFL CBT. John Wiley & Sons, Inc., 2002.

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Trade, Chicago Board of, ed. CBOT yield tables. Chicago Board Trade, 1995.

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Dryden, Windy. Single-Session Integrated CBT (SSI-CBT). Routledge, 2016. http://dx.doi.org/10.4324/9781315623122.

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Tafrate, Raymond Chip, and Damon Mitchell, eds. Forensic CBT. John Wiley & Sons, 2013. http://dx.doi.org/10.1002/9781118589878.

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Bobrow, Jerry. GRE CBT. 6th ed. IDG Books Worldwide, 2000.

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Limited, Micromedia, ed. CBCA subject authority file. Micromedia, 1986.

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Bannink, Fredrike. Practicing Positive CBT. John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781118328941.

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Steel, Craig, ed. CBT for Schizophrenia. John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781118330029.

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Free, Michael L. CBT and Christianity. John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118330098.

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Cayoun, Bruno A. Mindfulness-Integrated CBT. John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9781119993162.

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Book chapters on the topic "CBCT"

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Jadu, Fatima M., and Ernest W. N. Lam. "CBCT Sialography." In Maxillofacial Cone Beam Computed Tomography. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62061-9_25.

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Kinariwala, Niraj. "CBCT in Endodontics." In Guided Endodontics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55281-7_2.

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Pauwels, Ruben. "CBCT Quality Assurance." In Maxillofacial Cone Beam Computed Tomography. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62061-9_7.

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Corazza, Angelo, and Luca Maria Sconfienza. "Basic CBCT Anatomy." In Cone Beam CT and 3D imaging. Springer Milan, 2013. http://dx.doi.org/10.1007/978-88-470-5319-9_3.

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De Rubeis, Gianluca, Gennaro Castiello, Maria Silvia Giuliani, Pascale Roberte Riu, Sebastiano Fabiano, and Roberto Cianni. "CBCT and Software." In Transarterial Chemoembolization (TACE). Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-36261-3_5.

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Damaskos, Spyros, and Antigoni Delantoni. "CBCT Anatomical Imaging." In Atlas of Dentomaxillofacial Anatomical Imaging. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-96840-3_8.

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Lei, Yang, Tonghe Wang, Joseph Harms, et al. "CBCT-Based Synthetic MRI Generation for CBCT-Guided Adaptive Radiotherapy." In Artificial Intelligence in Radiation Therapy. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-32486-5_19.

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Farman, Allan G., and William C. Scarfe. "Historical Perspectives on CBCT." In Maxillofacial Cone Beam Computed Tomography. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62061-9_1.

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Yang, Jie, William C. Scarfe, and Christos Angelopoulos. "Incidental Findings on CBCT." In Maxillofacial Cone Beam Computed Tomography. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62061-9_16.

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Doyle, Scott L., Bruno Azevedo, Martin D. Levin, David Gane, Allan G. Farman, and William C. Scarfe. "Endodontic Applications of CBCT." In Maxillofacial Cone Beam Computed Tomography. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62061-9_22.

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Conference papers on the topic "CBCT"

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Waterink, E., R. José Santo, C. A. T. Van Den Berg, H. W. A. M. De Jong, A. Sbrizzi, and C. Beijst. "CBCT-MOTUS: Model-Based Non-Rigid Motion Estimation and Correction for CBCT Imaging." In 2024 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector Conference (RTSD). IEEE, 2024. http://dx.doi.org/10.1109/nss/mic/rtsd57108.2024.10658257.

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Chen, Xiaoqian, Richard L. J. Qiu, Tonghe Wang, et al. "Generating synthetic CT from CBCT using a patient-specific diffusion model for CBCT-guided adaptive radiotherapy." In Image-Guided Procedures, Robotic Interventions, and Modeling, edited by Maryam E. Rettmann and Jeffrey H. Siewerdsen. SPIE, 2025. https://doi.org/10.1117/12.3047698.

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Brudfors, Mikael, Mark Graham, Hyungon Ryu, and Oliver Kutter. "Monai for Deep-Learning Based CBCT Reconstruction." In 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW). IEEE, 2024. http://dx.doi.org/10.1109/icasspw62465.2024.10626056.

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Yunker, A. Austin, B. Rajkumar Kettimuthu, and C. John C. Roeske. "Low Dose CBCT Denoising Using a 3D U-Net." In 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW). IEEE, 2024. http://dx.doi.org/10.1109/icasspw62465.2024.10627237.

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Mirzaei, Simin, Ailar Mahdizadeh, Milad Yazdani, et al. "Visual Quality Enhancement of Low-Dose Dental CBCT Images." In 2024 9th International Conference on Frontiers of Signal Processing (ICFSP). IEEE, 2024. https://doi.org/10.1109/icfsp62546.2024.10785432.

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Qiao, Jinhao, Jiang Liu, Heng Yu, et al. "VAG: Voxel Attenuation Grid For Sparse-View CBCT Reconstruction." In 2024 IEEE International Conference on Image Processing (ICIP). IEEE, 2024. http://dx.doi.org/10.1109/icip51287.2024.10647311.

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Feng, Xiang, Chengkai Wang, Chengyu Wu, et al. "FDNet: Feature Decoupled Segmentation Network for Tooth CBCT Image." In 2024 IEEE International Symposium on Biomedical Imaging (ISBI). IEEE, 2024. http://dx.doi.org/10.1109/isbi56570.2024.10635263.

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Hu, Yuanming, Boyuan Li, Shuang Xu, et al. "Reducing scatter and cone-beam artifacts in DE-CBCT." In Physics of Medical Imaging, edited by John M. Sabol, Shiva Abbaszadeh, and Ke Li. SPIE, 2025. https://doi.org/10.1117/12.3044778.

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Xia, D., Z. Yang, H. Cao, H. Qu, and F. Tian. "Generation of lateral cephalometric radiographs from 3D CBCT dental images." In 2024 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector Conference (RTSD). IEEE, 2024. http://dx.doi.org/10.1109/nss/mic/rtsd57108.2024.10656317.

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Nikolakakis, Emmanouil, Utkarsh Gupta, Jonathan Vengosh, Justin Bui, and Razvan Marinescu. "GaSpCT: Gaussian splatting for novel brain CBCT projection view synthesis." In Image Processing, edited by Olivier Colliot and Jhimli Mitra. SPIE, 2025. https://doi.org/10.1117/12.3045479.

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Reports on the topic "CBCT"

1

Solodkaya, K. I., V. V. Petrovskaya, and YU A. Gioeva. Sagittal cephalometric analysis of skull CBCT. OFERNIO, 2021. http://dx.doi.org/10.12731/ofernio.2021.24755.

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Solodkaya, K. I., V. V. Petrovskaya, and YU A. Gioeva. Coronal-axial cephalometric analysis of skull CBCT. OFERNIO, 2021. http://dx.doi.org/10.12731/ofernio.2021.24756.

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Steegman, Ralph, Anne-Marie Renkema, Herman Verbeek, Adriaan Schoeman, Anne Marie Kuijpers-Jagtman, and Yijin Ren. Upper Airway Volumetric Changes on CBCT after Orthodontic Interventions: protocol for a systematic review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.4.0017.

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Review question / Objective: Does the volume of the upper airway change after an orthodontic intervention? P: growing subjects, adults; I: orthodontic treatment, dentofacial orthopedics, extractions; C: untreated subjects and/or non-extractions; O: volumetric changes of the upper airway measured on CBCT scans. Condition being studied: The primary objective of orthodontic treatment is to establish optimal dental and/or skeletal relationship in harmony with the soft tissue morphology and functioning. In addition, un-impeding or facilitating airway growth and development is an important objective, especially in patients susceptible for airway obstruction or sleep apnea. It is therefore important to look into the effect of various orthodontic treatments on the 3D volumetric changes of the upper airway. Compared with the use of traditional 2D lateral cephalograms, CBCT scans provide the opportunity to perform measurements in more dimensions on the airway with demonstrated reliability. This systematic review therefore includes studies using CBCT scans for evaluation of the airway.
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Mayer, Luciano. Immediate Implant in The Esthetic Zone: A Three Year Clinical, X-Ray and CBCT Follow-Up of Peri-Implant Tissues. Science Repository, 2019. http://dx.doi.org/10.31487/j.dobcr.2019.04.01.

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Bailey, David S. Inline CBET Model Including SRS Backscatter. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1229822.

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6

Baldwin, R., and R. Rivest. The RC5, RC5-CBC, RC5-CBC-Pad, and RC5-CTS Algorithms. RFC Editor, 1996. http://dx.doi.org/10.17487/rfc2040.

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Karn, P., P. Metzger, and W. Simpson. The ESP DES-CBC Transform. RFC Editor, 1995. http://dx.doi.org/10.17487/rfc1829.

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Whiting, D., R. Housley, and N. Ferguson. Counter with CBC-MAC (CCM). RFC Editor, 2003. http://dx.doi.org/10.17487/rfc3610.

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Pereira, R., and R. Adams. The ESP CBC-Mode Cipher Algorithms. RFC Editor, 1998. http://dx.doi.org/10.17487/rfc2451.

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Ballardie, A. Core Based Trees (CBT) Multicast Routing Architecture. RFC Editor, 1997. http://dx.doi.org/10.17487/rfc2201.

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