Cone-Beam Computed Tomography Allows Accurate Registration to Surgical Navigation Systems: A Multidevice Phantom Study

2019 ◽  
Vol 33 (6) ◽  
pp. 691-699 ◽  
Author(s):  
Benjamin J. Talks ◽  
Karan Jolly ◽  
Hanna Burton ◽  
Hitesh Koria ◽  
Shahzada K. Ahmed
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Surgical Navigation ◽  
Imaging Modality ◽  
Field Of View ◽  
Cone Beam ◽  
Navigation Systems ◽  
Registration Error ◽  
Surgical Navigation Systems ◽  
Phantom Head

Background Cone-beam computed tomography (CBCT) is a fast imaging technique with a substantially lower radiation dosage than conventional multidetector computed tomography (MDCT) for sinus imaging. Surgical navigation systems are increasingly being used in endoscopic sinus and skull base surgery, reducing perioperative morbidity. Objective To investigate CBCT as a low-radiation imaging modality for use in surgical navigation. Methods The required field of view was measured from the tip of the nose to the posterior clinoid process anteroposteriorly and the nasolabial angle to the roof of the frontal sinus superoinferiorly on 50 consecutive MDCT scans (male = 25; age = 17–85 years). A phantom head was manufactured by 3-dimensional printing and imaged using 3 CBCT scanners (Carestream, J Morita, and NewTom), a conventional MDCT scanner (Siemens), and highly accurate laser scanner (FARO). The phantom head was registered to 3 surgical navigation systems (Brainlab, Stryker, and Medtronic) using scans from each system. Results The required field of view (mean ± standard deviation) was measured as 107 ± 7.6 mm anteroposteriorly and 90.3 ± 9.6 mm superoinferiorly. Image error deviations from the laser scan (median ± interquartile range) were comparable for MDCT (0.19 ± 0.09 mm) and CBCT (CBCT 1: 0.15 ± 0.11 mm; CBCT 2: 0.33 ± 0.18 mm; and CBCT 3: 0.13 ± 0.13 mm) scanners. Fiducial registration error and target registration error were also comparable for MDCT- and CBCT-based navigation. Conclusion CBCT is a low-radiation preoperative imaging modality suitable for use in surgical navigation.

scholarly journals Use of Cone Beam Computed Tomography in Endodontics

2009 ◽  
Vol 2009 ◽  
pp. 1-20 ◽  
Author(s):  
William C. Scarfe ◽  
Martin D. Levin ◽  
David Gane ◽  
Allan G. Farman
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Low Dose ◽  
Imaging Modality ◽  
Three Dimensional ◽  
Field Of View ◽  
Cone Beam ◽  
Small Field ◽  
Endodontic Diagnosis ◽  
Small Field Of View

Cone Beam Computed Tomography (CBCT) is a diagnostic imaging modality that provides high-quality, accurate three-dimensional (3D) representations of the osseous elements of the maxillofacial skeleton. CBCT systems are available that provide small field of view images at low dose with sufficient spatial resolution for applications in endodontic diagnosis, treatment guidance, and posttreatment evaluation. This article provides a literature review and pictorial demonstration of CBCT as an imaging adjunct for endodontics.

Evaluation of Cone Beam Computed Tomography Artifacts Produced by Metal Objects Located Within and Outside the Field of View

2021 ◽  
Author(s):  
Ahmad Kassabji ◽  
Mehrnaz Tahmasbi ◽  
Robert A. Augsburger ◽  
Madhu Nair ◽  
Matthew J. Kesterke ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Field Of View ◽  
Cone Beam

scholarly journals Diagnosis of invasive cervical resorption by using cone beam computed tomography: report of two cases

2012 ◽  
Vol 23 (5) ◽  
pp. 602-607 ◽  
Author(s):  
Karla de Faria Vasconcelos ◽  
Yuri Nejaim ◽  
Francisco Haiter Neto ◽  
Frab Norberto Bóscolo
Keyword(s):  
Computed Tomography ◽  
Differential Diagnosis ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Root Resorption ◽  
Imaging Modality ◽  
Relevant Information ◽  
Cone Beam ◽  
Short Period ◽  
Radiographic Interpretation

A radiographic interpretation is essential to the diagnosis of invasive cervical resorption (ICR) and the difficulty in distinguishing this lesion from internal root resorption has been highlighted in the literature. This paper reports the use of cone beam computed tomography (CBCT) in the diagnosis of ICR. The cases reports describe how CBCT can be used to make a differential diagnosis and also show that the use of this technology can provide relevant information on the location and nature of root resorption, which conventional radiographs cannot. As a result, the root canal treatment was not initially considered. The patients will be monitored and will undergo a scan after a short period of time to detect any small changes. It was observed that both cases benefited from CBCT in the diagnosis of ICR, because this imaging modality determined the real extent of resorption and possible points of communication with the periodontal space.

Effect of Cone-Beam Computed Tomography Field of View and Acquisition Frame on the Detection of Chemically Simulated Peri-Implant Bone Loss In Vitro

2015 ◽  
Vol 86 (10) ◽  
pp. 1159-1165 ◽  
Author(s):  
Lucas Rodrigues Pinheiro ◽  
William C. Scarfe ◽  
Marcelo Augusto de Oliveira Sales ◽  
Bruno Felipe Gaia ◽  
Arthur Rodriguez Gonzalez Cortes ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Loss ◽  
Cone Beam Computed Tomography ◽  
Field Of View ◽  
Cone Beam

scholarly journals Cone-Beam Computed Tomography and Radiographs in Dentistry: Aspects Related to Radiation Dose

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Diego Coelho Lorenzoni ◽  
Ana Maria Bolognese ◽  
Daniela Gamba Garib ◽  
Fabio Ribeiro Guedes ◽  
Eduardo Franzotti Sant’Anna
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Radiation Dose ◽  
Cone Beam Computed Tomography ◽  
Field Of View ◽  
Cone Beam ◽  
Special Focus ◽  
Radiation Doses ◽  
Lower Effective Dose ◽  
Plain Radiographs

Introduction. The aim of this study was to discuss the radiation doses associated with plain radiographs, cone-beam computed tomography (CBCT), and conventional computed tomography (CT) in dentistry, with a special focus on orthodontics.Methods. A systematic search for articles was realized by MEDLINE from 1997–March 2011.Results. Twenty-seven articles met the established criteria. The data of these papers were grouped in a table and discussed.Conclusions. Increases in kV, mA, exposure time, and field of view (FOV) increase the radiation dose. The dose for CT is greater than other modalities. When the full-mouth series (FMX) is performed with round collimation, the orthodontic radiographs transmit higher dose than most of the large FOV CBCT, but it can be reduced if used rectangular collimation, showing lower effective dose than large FOV CBCT. Despite the image quality, the CBCT does not replace the FMX. In addition to the radiation dose, image quality and diagnostic needs should be strongly taken into account.

scholarly journals Knowledge, Practice and Attitude of Dentists towards Cone Beam Computed Tomography

2021 ◽  
Vol 10 (38) ◽  
pp. 3413-3418
Author(s):  
Fatma Fayez Badr ◽  
Mohammed Abdulaziz Barayan ◽  
Fatima Mohammed Jadu ◽  
Hanadi Mohammed Khalifa
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Imaging Modality ◽  
Cross Sectional Study ◽  
Basic Knowledge ◽  
Cone Beam ◽  
Cross Sectional ◽  
Policy Makers ◽  
Knowledge Practice ◽  
General Dentists

BACKGROUND Cone beam computed tomography (CBCT) was first introduced in 2008 and has since seen a tremendous growth in both private dental clinics and dental institutions. This has led to the normalization of CBCT use by general dentists. Therefore, it is essential to assess how and why general and specialist dentists use CBCT. The purpose of this study was to assess the knowledge, practice and attitude towards CBCT among general and specialist dentists working in the kingdom of Saudi Arabia. METHODS In this cross-sectional study, a questionnaire was electronically distributed via email and social media from October 2018 to September 2020. The self-administered questionnaire was divided into five segments: demographics, knowledge, current practice, training and attitude. RESULTS A total of 221 dentists filled the questionnaire including 85 general dentists and 135 post graduate students or specialists. The majority of dentists (81.9 %) demonstrated poor knowledge. Orthodontists and endodontists were most aware of CBCT terms. Most dentists (71.5 %) have a CBCT unit in their practice. Only 34.8 % received CBCT training, the majority of which was theoretical. A positive attitude was noted in 83.2 % of dentists by agreeing to a statement regarding CBCT justification. CONCLUSIONS Poor CBCT knowledge was evident in majority of dentists despite having CBCT in their practice. Dentists are highly aware of the importance of CBCT justification and professional interpretation; however, they lack basic knowledge and training related to this imaging modality. This highlights an institutional gap that policy makers should address in order to ensure the highest quality of patient care. KEY WORDS Cone Beam Computed Tomography; CBCT; Survey

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