نتایج جستجو برای: cbct cone

تعداد نتایج: 43079  

محمدزاده, زهرا, ابراهیمی, معصومه , بابازاده, فرامرز ,

Introduction: Central giant cell granuloma (CGCG) is a relatively rare and non neoplastic tumor with unclear exact etiology that is reported in children. Cone beam computed tomography (CBCT) technique for precise diagnosis and treatment of the jaw lesions is recommended in the recent years. The object of this case-report study is to use CBCT in the diagnosis and treatment of CGCG. Case Repor...

2016
Mohsen Bahmani Alireza Adl Samane Javanmardi Sina Naghizadeh

A 20-year-old man presented with the history of pain and swelling in the anterior maxillary segment. The periapical radiography was indicative of a dental anomaly in right maxillary lateral incisor. Due to the insufficient information from conventional radiography, cone-beam computed tomography (CBCT) was ordered. CBCT showed apical root resorption, large apical lucency and two separate canals ...

2012
Allex Morelli Heiderich de Mattos Christiano Sampaio Queiroz Pablo Leal Teixeira Santos Adriana Borges de Oliviera Camila Oliveira Paulo Sérgio Flores Campos

Due to the great number of structures in the maxillofacial region, cone-beam computed tomography (CBCT) is an important procedure in presurgical planning for removal of impacted teeth. Most of the information provided by this imaging technique cannot be visualized in conventional radiographs. In addition, CBCT reduces patient exposure to radiation in comparison with helical computed tomography ...

Journal: :iranian endodontic journal 0
amir hosein kiarudi mohammad jafar eghbal yaser safi mohammad mehdi aghdasi mahta fazlyab

by producing undistorted three-dimensional images of the area under examination, cone-beam computed tomography (cbct) systems have met many of the limitations of conventional radiography. these systems produce images with small field of view at low radiation doses with adequate spatial resolution that are suitable for many applications in endodontics from diagnosis to treatment and follow-up. t...

2010
Sabrina dos Reis Luiz César de Moraes Paula de Moura

Introduction: Evaluation of upper airway space is a routine procedure in orthodontic diagnosis and treatment planning. Although limited insofar as they provide two dimensional images of three-dimensional structures, lateral cephalometric radiographs have been used routinely to assess airway space permeability. Cone-Beam Computed Tomography (CBCT) has contributed to orthodontics with information...

Journal: :International endodontic journal 2014
S Patel C Durack F Abella M Roig H Shemesh P Lambrechts K Lemberg

This Position Statement represents a consensus of an expert committee convened by the European Society of Endodontology (ESE) on the use of Cone Beam Computed Tomography (CBCT). The statement is based on the current scientific evidence, and provides the clinician with evidence-based criteria on when to use CBCT in Endodontics. Given the dynamic and changing nature of research, development of ne...

2017
Corina Marilena Cristache

Despite numerous advantages over multislice computed tomography (MSCT), including a lower radiation dose to the patient, shorter acquisition times, affordable cost, and sometimes greater detail with isotropic voxels used in reconstruction, allowing precise measurements, cone beam computed tomography (CBCT) is still controversial regarding bone quality evaluation. This paper presents a brief rev...

Journal: :Dento maxillo facial radiology 2011
R Schulze U Heil D Gross D D Bruellmann E Dranischnikow U Schwanecke E Schoemer

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...

Journal: :Dental clinics of North America 2008
William C Scarfe Allan G Farman

This article on x-ray cone-beam CT (CBCT) acquisition provides an overview of the fundamental principles of operation of this technology and the influence of geometric and software parameters on image quality and patient radiation dose. Advantages of the CBCT system and a summary of the uses and limitations of the images produced are discussed. All current generations of CBCT systems provide us...

2013
JR Sykes R Lindsay G Iball DI Thwaites

The use of Cone beam CT (CBCT) systems for Image Guided Radiotherapy is rapidly expanding in the developed world. With its use comes concern for the increased risks of additional radiation exposure. Quantification of the imaging dose is necessary in order to report, optimise and justify CBCT exposures. This article reviews the current methods of dose measurement and calculation including dose m...

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