نتایج جستجو برای: digital radiography

تعداد نتایج: 325160  

Alieh Sadat Javadzadeh Haghighat, Fatemeh Shahsavari, Habibeh Alimohammadi, Seyedeh Saeideh Mohtavipour, Seyedeh Tahereh Mohtavipour, Zahra Dalili Kajan,

Introduction: Various intraoral digital radiographic systems are available as an alternative to film-based radiography. Recent rapid progress in the field of digital radiography offers the possibility of image processing and manipulation. Pseudocolor filter is one of the tools of digital systems. The aim of this study was to compare diagnostic accuracy of proximal caries in black and white a...

Journal: :The Journal of prosthetic dentistry 2010
Daniel M Schweitzer Robert W Berg

Digital dental radiographic imaging is considered to be as diagnostically accurate as conventional film-based radiography. In addition, many digital radiographic systems offer various image enhancements that may aid in image interpretation. However, neither type of radiographic imaging technique perfectly correlates radiographic diagnoses with clinical findings. Moreover, visual digital enhance...

Journal: :dental research journal 0
e. hekmatian s. sharif n. khodaian

0

Journal: :Diagnostic and interventional radiology 2014
Tolga İnal Gökçe Ataç

PURPOSE We aimed to determine the radiation doses delivered to patients undergoing general examinations using computed or digital radiography systems in Turkey. MATERIALS AND METHODS Radiographs of 20 patients undergoing posteroanterior chest X-ray and of 20 patients undergoing anteroposterior kidney-ureter-bladder radiography were evaluated in five X-ray rooms at four local hospitals in the ...

2007
Ho Kyung Kim Min Kook Cho

In the moment of any given imaging task and thus over the lifetime of a detector, the deposition of certain amount of radiation dose in an electronic pixel element is inevitable. This radiation effect can give rise to a change of the pixel-element characteristics such as the leakage current of a photodiode and the threshold voltage of thin-film transistors (TFTs) [1], and which may consequently...

Journal: :AJNR. American journal of neuroradiology 1989
M Schumacher K Kutluk D Ott

Different angiographic techniques (e.g., multiple oblique views, angiotomography, and magnification angiography) have been proposed to improve the diagnosis of cerebral vascular malformations and occlusive diseases. However, these methods are either time-consuming or necessitate repeated injections of contrast medium. The common goals of all these techniques are (1) to achieve a documentation o...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
z. jaberi ansari dept. of restorative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. s. valizadeh dept. of oral & maxillofacial radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. z. hosseini dept. of orthodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. a. ghaznavi dept. of oral & maxillofacial radiology, school of dentistry, urmia university of medical sciences, urmia, iran.

objective: when none of digital systems and scanners is accessible and it is essential to have digitized images of conventional radiographs, digital cameras can be used. the aim of this study was to investigate whether digital images obtained by different resolutions of a digital camera are matched to the original radiographs in evaluation of caries. methods: in this diagnostic accuracy in vitr...

Journal: :dental research journal 0
abbas haghighat ehsan hekmatian mehrdad abdinian ezzeddin sadeghkhani

background: there is a controversy about exact time of bone healing. the aim of this study was evaluation of bone formation and change of density after mandibular third molar extraction.     methods: radiographs were taken from 16 empty tooth sockets immediately after extraction of mandibular third molars and 2, 4 and 6 months later under similar condition. the radiographs were digitized and th...

2012
Akhtar M. Shaikh

Neutron radiography systems based on Gd, Dy and In metallic foils and X-ray films have been used at this centre since early seventies for various NDT and R&D work in nuclear, defense and aerospace industries. In recent years use of digital detection systems such as neutron scintillator and CCD based imaging systems and photostimulated luminescence based phosphor imaging plate systems have been ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید