نتایج جستجو برای: cone beam computed tomography cbct

تعداد نتایج: 398840  

2010
Jing Wang Zhengrong Liang Hongbing Lu Lei Xing

Cone-beam computed tomography (CBCT) is an emerging medical imaging modality used for various clinical applications. However, radiation dose to patients is a major limiting factor for its utility in some applications such as daily patient setup and future adaptive therapy in radiotherapy. In this article, we summarize recent development for dose reduction in CBCT. In particular, we discuss seve...

2014
Kavitha Srinivasan Mohammad Mohammadi Justin Shepherd

The use of Cone-beam Computed Tomography (CBCT) in radiotherapy is increasing due to the widespread implementation of kilovoltage systems on the currently available linear accelerators. Cone beam CT acts as an effective Image-Guided Radiotherapy (IGRT) tool for the verification of patient position. It also opens up the possibility of real-time re-optimization of treatment plans for Adaptive Rad...

Journal: :Brazilian oral research 2010
Alexandre Perez Marques Andréia Perrella Emiko Saito Arita Marlene Fenyo Soeiro de Matos Pereira Marcelo de Gusmão Paraíso Cavalcanti

There are many limitations to image acquisition, using conventional radiography, of the temporomandibular joint (TMJ) region. The Computed Tomography (CT) scan is a better option, due to its higher accuracy, for purposes of diagnosis, surgical planning and treatment of bone injuries. The aim of the present study was to analyze two protocols of cone beam computed tomography for the evaluation of...

Journal: :Medicina Oral Patología Oral y Cirugia Bucal 2012

Journal: :Journal of clinical periodontology 2014
Jing Qiao Shiying Wang Jinyu Duan Yong Zhang Yun Qiu Changzhou Sun Denggao Liu

AIM The aim of this study was to investigate the accuracy of cone-beam computed tomography (CBCT) in assessing maxillary molar furcation involvement (FI). MATERIALS AND METHODS Fifteen patients with generalized chronic periodontitis after initial therapy were recruited. CBCT was performed in maxillary molars with probing pocket depths of ≥6 mm and advanced FI, and CBCT images were analysed. F...

Journal: :European journal of radiology 2008
Rudolf Boeddinghaus Andy Whyte

A review of state-of-the-art maxillofacial imaging is presented. Current imaging techniques include intra-oral radiographs, dental panoramic tomography, multidetector helical computed tomography, cone-beam computed tomography (CBCT) and magnetic resonance imaging (MRI). The commonest conditions encountered in clinical radiological practice are reviewed, including maxillofacial deformities, comp...

آریامنش, حافظ, خالصی, میثم, فردمال, جواد, فلاحی, سامان, فیروز, فرناز, موسوی, سحر, حیدری, بیژن ,

Introduction & Objective: Study of bone quality before treatment is very important. The aims of this study were to assess bone quality with density values obtained by cone-beam computed tomography (CBCT) and to determine the correlations between bone density and primary stability of dental implants. Materials & Methods: In this experimental in vitro study 32 implants were inserted into fresh ...

2017
Gerben R. Borst

Purpose: Kilovoltage cone-beam computed tomography (CBCT) has been developed to provide accurate soft-tissue and bony setup information. We evaluated clinical CBCT setup data and compared CBCT measurements with electronic portal imaging device (EPID) images. Material and Methods: The setup error for CBCT scans at the treatment unit relative to the planning CT was measured for 62 patients (524 s...

2017
BS Mahesh Shilpa P Shastry Padmashree S Murthy TR Jyotsna

AIM To report a rare case of large radicular cyst-associated deciduous tooth and to discuss the importance of cone beam computed tomography (CBCT) in diagnosing the condition. BACKGROUND Radicular cyst is the most common cyst affecting the permanent teeth, but its occurrence in deciduous teeth is rare. Most of the radicular cysts are asymptomatic and are discovered accidentally when radiograp...

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