نتایج جستجو برای: dental image quality

تعداد نتایج: 1235828  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده مدیریت و اقتصاد 1392

these days, all department stores make an effort to provide their clients with valuable products in order to project the best image for them. as a result, clients’ comprehension risk will decrease and they will be more willing to repurchase. having a good image is really important for the department stores because it makes an impression on clients’ comprehension of both quality and risk. consid...

2012
Bo-Ram Choi Da-Hye Choi Kyung-Hoe Huh Won-Jin Yi Min-Suk Heo Soon-Chul Choi Kwang-Hak Bae Sam-Sun Lee

PURPOSE The purpose of this study was to investigate the level of clinical image quality of panoramic radiographs and to analyze the parameters that influence the overall image quality. MATERIALS AND METHODS Korean dental clinics were asked to provide three randomly selected panoramic radiographs. An oral and maxillofacial radiology specialist evaluated those images using our self-developed C...

2010
Edgar Bailey

A hand-held, battery-powered dental intraoral x-ray system (60 kV, constant potential output) was compared to a conventional, wall-mounted intraoral x-ray system (70 kVp, self-rectified output) in terms of image quality, and patient and staff radiation doses. The image quality comparison included quantitative measurements of image sharpness (resolution) and contrast. Patient doses were compared...

2009
Ozlem Gormez Hasan Huseyin Yilmaz

Image post-processing of dental digital radiographs, a function which used commonly in dental practice is presented in this article. Digital radiography has been available in dentistry for more than 25 years and its use by dental practitioners is steadily increasing. Digital acquisition of radiographs enables computer-based image post-processing to enhance image quality and increase the accurac...

Journal: :The Journal of the Kyushu Dental Society 1977

Journal: :journal of medical signals and sensors 0

in this paper we propose novel algorithms for retrieving dental images from databases by their contents. based on special information of dental images, for better content based dental image retrieval and representation, the image attributes are used. we propose disr (dental image segmentation and retrieval), a content-based image retrieval method which is robust to translation and scaling of th...

Farahnaz Rahimi Sanaz Hariri Tabrizi, Zohreh Azma,

Introduction: The issue of metal artifact and its reduction is as old as the clinical use of computed tomography itself. When metal objects such as dental fillings, hip prostheses or surgical clips are present in the computed tomography (CT) field of view (FOV), make severe artifacts that reduce the image quality and accuracy of CT numbers. They can lead to unreliable ...

Ebrahim Zadeh, Saeed, Haji Ali Afzali, Amin, Imani Moghadam, Mahrokh,

Evaluation of the effect of four current Iranian processing solutions on the image quality of two dental X-ray films Dr. M. Imani Moghadam* - Dr. AHA. Afzali** - Eng. S. Ebrahim Zadeh*** *- Assistant Professor of Dentomaxillofacial Radiology Dept. - Faculty of Dentistry – Mashhad University of Medical Sciences. **- Radiologist. ***- The member of Mashhad University of Medical Sciences. Backgrou...

Journal: :IEICE Transactions 2008
Koichi Ito Akira Nikaido Takafumi Aoki Eiko Kosuge Ryota Kawamata Isamu Kashima

In mass disasters such as earthquakes, fire disasters, tsunami, and terrorism, dental records have been used for identifying victims due to their processing time and accuracy. The greater the number of victims, the more time the identification tasks require, since a manual comparison between the dental radiograph records is done by forensic experts. Addressing this problem, this paper presents ...

Introduction: Nowadays the use of cone beam computed tomography in dental imaging is increasing, although this method has a much lower dose than conventional CT scans, it delivers a higher dose than the panoramic and periapical patients therefore, , the aim of this study was to investigate the factors affecting the patients' dose in dental CBCTs and methods of optimizing and reducing the patien...

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