نتایج جستجو برای: radiographic image

تعداد نتایج: 403176  

2017
Lamia Alam Pranab Kumar Dhar Mirza A. F. M. Rashidul Hasan Mohammed Golam Sarwar Golam Moktader Daiyan

1Department of Computer Science and Engineering, Chittagong University of Engineering and Technology (CUET), Chittagong-4349, Bangladesh 2Department of Information and Communication Engineering, University of Rajshahi, Rajshahi, Bangladesh 3Department of Computer Science and Engineering, Model Institute of Science and Technology, Bangladesh 4Department of Computer Science and Engineering, East ...

2016
Wenming GUO Yuliang CHEN

The defect depth had always been difficult to measure in the regular Radiographic Testing in the past, but can be accurately measured in Digital Radiographic image grayscale by the digital image processing technology. In the paper, the corresponding relation between the digital image grayscale value of the welding defect and the X-ray strength, was analyzed by means of Beer Theorem, and an algo...

2009
Baldev Raj

Radiographic images can provide quantitative as well as quantitative information if they are subjected to densitometric analysis. Digital radiography consists of four major steps which include X-ray detection, digitization, image processing and display. The digitization process varies from device to device and may suffer variations even when the same digital equipment is used throughout time. A...

Journal: :iranian endodontic journal 0
shahriar shahi associate professor, dental and periodontal disease research center, faculty of dentistry, tabriz university of medical sciences, tabriz, iran. saeed rahimi associate professor, department of endodontics, faculty of dentistry, tabriz university of medical sciences, tabriz, iran. amin salem milani assistant professor, dental and periodontal disease research center, tabriz university of medical sciences, tabriz, iran. researcher, iranian center for endodontic research, shahid beheshti university of medical sciences, tehran, iran. mohammad asghari jafarabadi assistant professor, department of statistics and epidemiology, faculty of health and nutrition, tabriz university of medical sciences, tabriz, iran. gholam reza djoorabbaf naghsh dentist

introduction: determination of the canal working length with radiographs has many drawbacks. electronic apex locators have been developed to overcome some of these problems. recently, a newly designed apex locator called novapex has been introduced. all the studies conducted to determine the accuracy of novapex have been carried out in-vitro on extracted teeth. the aim of this in vivo study was...

BACKGROUND AND AIM: Digital panoramic X-ray images can be captured using photostimulable phosphors or solid-state detectors (i.e. charge-coupled devices and Flat-Panels). The first category is defined as computed radiography (CR) or semi-direct radiography. The second technology that uses solid-state detectors is known as direct digital radiography (DDR). Both of these technologies have their o...

Journal: :QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 1996

Journal: :Japanese Journal of Radiological Technology 1994

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 1996
W J Oyen J A Lemmens R A Claessens J R van Horn T J Slooff F H Corstens

UNLABELLED Radiographic arthrography and bone scintigraphy are common diagnostic procedures used for evaluating total hip prostheses. In this study, both techniques are combined, and nuclear contrast imaging (nuclear arthrography) is added. The efficacy of the procedures is evaluated. METHODS After intravenous injection of 99mTc-methylene diphosphonate (MDP), standard radiographic arthrograph...

Journal: :Nihon Hoshasen Gijutsu Gakkai zasshi 2010
Taro Sakaguchi Reiji Katayama Junji Morishita Shinji Sakai Hidefumi Kuroki Seiji Ohkubo Takashi Maeda Naofumi Hayabuchi

The purpose of this study was to examine the correlation between the basic imaging properties of two digital radiographic X-ray systems with a direct conversion flat-panel detector and their image qualities, which were evaluated by the observer in hard copy and soft copy studies. The subjective image quality was evaluated and compared in terms of the low-contrast detectability and image sharpne...

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