نتایج جستجو برای: digital imaging
تعداد نتایج: 748288 فیلتر نتایج به سال:
Digital imaging in cytopathology can be defined as a series of procedures, those contributing to the quality of the displayed on the computer monitor final image. The procedures include sample preparation and staining, optical image formation by the microscope and afterwards the digital image sampling by the camera sensor; which means digital image post-processing and compression, transmission ...
objectives: this study aimed to compare the diagnostic accuracy of inverted and unprocessed digitized periapical radiographs for detection of peri-implant defects. materials and methods: a total of 30 osteotomy sites were prepared in three groups of control, study group 1 with 0.425 mm defects and study group 2 with 0.725 mm defects using the sic and astra tech drill systems with 4.25mm and 4.8...
Background and purpose: The use of intraoral direct digital radiography has been possible only the past two decades. Controlled laboratory and clinical studies are needed to determine whether the new digital system changes the diagnosis, treatment and prognosis than the conventional methods. Purpose of this study is compare the diagnostic accuracy for the detection of approximal caries of three...
Most breast imaging programs have replaced film-screen mammography systems with digital mammography. Other breast imaging methods, such as digital breast tomosynthesis, complement the tools available for screening and diagnosis of breast cancer. This article examines digital mammography, other digital breast imaging modalities, and the effects of these technologies on practice, quality, efficie...
BACKGROUND To evaluate the efficacy of wide-field digital retinal imaging for retinopathy of prematurity screening. DESIGN Retrospective study in a quaternary public neonatal intensive care unit. PARTICIPANTS A total of 108 premature infants screened for retinopathy of prematurity. METHODS Retrospective chart and photo review were performed on participants screened by both serial wide-fie...
Aesthetic and smile design is one of the most important motivations for going to dentists and one of the most of researchers’ attention. The most important aspect of the remedy is to diagnose, especially when aesthetic is concerned and dentist should interfere the patient actively in the treatment planning. It means dentist must know what is aesthetic in patient points of view. One way to ach...
Because of the important role of rock mass structural properties on its mechanical behavior, determining the qualitative and quantitative properties of has been a subject of intense research. In this regard, numerous techniques such as scanline surveying, cell mapping, and geologic structure mapping have been proposed. However, applying such field surveying techniques for rock mass properties i...
Introduction: The development and progress of computerized technologies has revolutionized radiology with digital imaging. The aim of this study is to compare Digital Radiography(DR) and Temporal Digital Subtraction (TDS)in detection of dentinal caries progression. Methods: 27carious teeth were placed in separate vials of sterile buffer solution after extraction .Three radiopaque restorations ...
The use of digital imaging for the diagnostic purpose has been increased during last few years. This technique has brought advancement in the field of radiography. The effect of digital imaging on workflow has a direct relation with the performance of technologists. Aim: The predestined aim of this study was to analyze the use and influence of digital imaging on the workflow of the radiologists...
Background and purpose: Dual-energy mammography technique is used for improving the accuracy of breast cancer diagnosis especially in dense breast cases and also detection of micro-calcifications which are early signs of breast cancer. The purpose of this study was to investigate the automatic separation feasibility of micro-calcification images in breast tissue images and evaluating its accura...
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