نتایج جستجو برای: beam computed tomography cbct

تعداد نتایج: 367528  

ژورنال: :مجله علمی دانشگاه علوم پزشکی گرگان 0
فریدا عابسی abesi f احسان موعودی moudi e بابل، میدان ولایت، خیابان فلسطین، صندوق پستی 853 ، تلفن 32291408-011 ، نمابر 22391093 سینا حقانی فر haghanifar s مصطفی نجفی najafi m

زمینه و هدف : ناحیه قدامی فک پایین محل انجام بسیاری از اعمال جراحی فک و دندان است. از طرفی این ناحیه محل شاخه ثنایایی عصب آلوئولار تحتانی است. این مطالعه به منظور تعیین میزان رویت و پیشروی شاخه ثنایایی عصب آلوئولار تحتانی در تصاویر cone beam computed tomography انجام شد. روش بررسی : در این مطالعه توصیفی تحلیلی 105 تصویر cbct از نظر وجود یا عدم وجود شاخه ثنایایی و میزان پیشروی عصب آلوئولار تحتان...

2015
Jerker Edén Strindberg Caroline Hol Gerald Torgersen Anne Møystad Mats Nilsson Karin Näsström Kristina Hellén-Halme

OBJECTIVES Cone-beam computed tomography in dentistry can be used in some countries by other dentists than specialists in radiology. The frequency of buying cone-beam computed tomography to examine patients is rapidly growing, thus knowledge of how to use it is very important. The aim was to compare the outcome of an investigation on the use of cone-beam computed tomography in Sweden with a pre...

Journal: :Brazilian dental journal 2016
Amir Eskandarloo Amin Mahdavi Asl Mohsen Jalalzadeh Maryam Tayari Mohammad Hosseinipanah Javad Fardmal Abbas Shokri

Accurate and early diagnosis of vertical root fractures (VRFs) is imperative to prevent extensive bone loss and unnecessary endodontic and prosthodontic treatments. The aim of this study was to assess the effect of time lapse on the diagnostic accuracy of cone beam computed tomography (CBCT) for VRFs in endodontically treated dog's teeth. Forty-eight incisors and premolars of three adult male d...

Journal: :Australian dental journal 2012
Mansur Ahmad J Jenny M Downie

In the past decade, the utility of cone beam computed tomography (CBCT) images in oral and maxillofacial surgery has seen continuous increase. However, CBCT images are not always able to replace other imaging modalities. Based on the current published knowledge, this paper discusses advantages and limitations of CBCT images in the diagnosis and surgical planning of dentoalveolar procedures, odo...

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...

2010
L. T. Hiew Kelvin W.C. Foong

Cone beam computed tomography (CBCT) can provide dentists with accurate 3D diagnostic images of the maxillofacial region at a lower irradiation dose compare to conventional medical CT. Due to low image contrast, higher image noise and missing image boundaries, tooth segmentation in CBCT is difficult even with experienced radiographic interpreters. In this paper, we proposed a graph cuts segment...

2015
Prashant P. Jaju Sushma P. Jaju

Cone-beam computed tomography (CBCT) is routinely recommended for dental diagnosis and treatment planning. CBCT exposes patients to less radiation than does conventional CT. Still, lack of proper education among dentists and specialists is resulting in improper referral for CBCT. In addition, aiming to generate high-quality images, operators may increase the radiation dose, which can expose the...

Journal: :Journal of endodontics 2010
Prasanna Neelakantan Chandana Subbarao Chandragiri V Subbarao

INTRODUCTION This study investigated the accuracy of cone-beam computed tomography (CBCT), peripheral quantitative computed tomography (pQCT), spiral computed tomography (SCT), plain (plain digi), and contrast medium-enhanced digital radiographs (contrast digi) in studying root canal morphology. METHODS The root canal anatomy was analyzed in 95 teeth using CBCT, pQCT, SCT, plain digi, and con...

2016

Aim: The objective of this study was to investigate the use of cone beam computed tomography (CBCT) in assessing furcation involvement (FI). Methods: The study group comprised of 17 patients diagnosed as generalized chronic periodontitis.A total of 20 first and 12 second maxillary molars with 96 furcation entrances were included.The degree of FI obtained by periodontal probing was compared with...

2012
Bruna Moraes Monteiro Denys Silveira Nobrega Filho Patrícia de Medeiros Loureiro Lopes Marcelo Augusto Oliveira de Sales

The aim of this study was to analyze the influence of filters (algorithms) to improve the image of Cone Beam Computed Tomography (CBCT) in diagnosis of osteolytic lesions of the mandible, in order to establish the protocols for viewing images more suitable for CBCT diagnostics. 15 dry mandibles in which perforations were performed, simulating lesions, were submitted to CBCT examination. Two exa...

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