نتایج جستجو برای: digital radiography

تعداد نتایج: 325160  

Journal: :journal of dentistry, tehran university of medical sciences 0
mehrdad abdinian dental implants research center, department of radiology, school of dentistry, esfahan university of medical sciences, esfahan, iran sayedmohammad razavi torabinejad dental research center and department of oral and maxillofacial pathology, school of dentistry, esfahan university of med- ical sciences, esfahan, iran. reyhaneh faghihian postgraduate student of pediatric dentistry, department of pediatric dentistry, faculty of dentistry, esfahan university of medical sciences, esfahan, iran amirabbas samety dentist, esfahan , iran elham faghihian postgraduate student of oral medicine, department of oral medicine, faculty of dentistry, esfahan university of medical sciences, esfa- han, iran

o bjectives : dental caries are common and have a high incidence among populations. radiographs are essential for detecting proximal caries. the best technique should be recognized for accurate detection of caries. the aim of this study was to compare the accuracy of detection of proximal caries using intra oral bitewing, extra oral bitewing, improved interproximal panoramic, improved orthogona...

Journal: :The journal of contemporary dental practice 2010
Najmeh Anbiaee Anousheh Rashad Mohassel Mahrokh Imanimoghaddam Seyed Mostafa Moazzami

AIM The purpose of this laboratory research was to compare the accuracy of digital and conventional bitewing radiographs in the diagnosis of recurrent caries under class II amalgam restorations. METHODS AND MATERIALS This study involved 82 posterior intact teeth in which class II amalgam boxes were prepared. Carious lesions were simulated in half of the proximal boxes in the intersection betw...

Journal: :Radiologic technology 2012
Quentin T Moore Steven Don Marilyn J Goske Keith J Strauss Mervyn Cohen Tracy Herrmann Robert Macdougall Lauren Noble Greg Morrison Susan D John Lois Lehman

Digital radiography has become the norm in U.S. hospitals. The ability to view images, postprocess, and transmit the images systemwide immediately are distinct advantages. Yet, these technical advances create challenges for the radiology community, including the need to re-educate the workforce and prevent unnecessary radiation exposure. This education process is even more important for those w...

2008
Solmaz Valizadeh Sara Ehsani Farzad Esmaeili Mohammad Amin Tavakoli

BACKGROUND AND AIMS Radiography is used to diagnose the demineralization process and carious lesions; however, conventional radiography and direct digital images do not show these lesions when the amount of demineralization is less than 40%. Digital subtraction radiography has recently been used to improve the diagnostic quality of these le-sions. The purpose of this study was to compare the ca...

Journal: :journal of dentistry, shiraz university of medical sciences 0
vahid rakhshan iranian tissue bank and research center, tehran university of medical sciences, dept. of dental anatomy and morphology, dental branch, islamic azad university, tehran, iran.

digital radiographs need additional metadata in order to be accurate when being converted to analog media. resolution is a major reason of failures in proper printing or digitizing the images. this letter shortly explains the overlooked pitfalls of digital radiography and photography in dental practice, and briefly instructs the reader how to avoid or rectify common problems associated with res...

Journal: :Journal of Medical Radiation Sciences 2020

2011
Julio Cezar de Melo Castilho Roberto Hiroshi Matsui Miriam Yumi Matsui Mônica Fernandes Gomes

Objective – Technological improvement is usually followed by comparisons between conventional and new. Those who work with radiographic assessment, such as cephalometric analysis for orthodontic diagnosis, have been living a new challenging and learning phase since the introduction of digital images. It is possible to obtain reproducible and clear images with digital radiography, but radiograph...

Journal: :iranian journal of radiation research 0
r. paydar medical physics and biomedical engineering department, school of medicine, tehran university of medical sciences, tehran, iran a. takavar medical physics and biomedical engineering department, school of medicine, tehran university of medical sciences, tehran, iran m.r. kardan nuclear sciences research school, radiation applications research school, tehran, iran a. babakhani national radiation protection department, iranian nuclear regulatory authority, teheran iran m.r. deevband national radiation protection department, iranian nuclear regulatory authority, teheran iran s. saber pulmonary ward, shariati hospital, school of medicine, tehran university of medical sciences, tehran, iran

background: the radiation doses resulting from diagnostic x-ray examinations are routinely measured in terms of entrance surface dose (esd) and effective dose (ed). in this study, for the purpose of radiation protection, the radiation doses received from digital chest x-ray examination were evaluated in terms of esd and ed. material and methods: the ed was calculated by using the mcnp monte car...

Journal: :Journal of the Korean Society of Radiology 2014

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