نتایج جستجو برای: radiographic quality
تعداد نتایج: 779327 فیلتر نتایج به سال:
Abstract Background and purpose: The Commission of European Communities (CEC) has developed a guideline in which many common radiographic techniques are determined. Following these guidelines will reduce patient dose and good quality image is obtained. Noncompliance of radiographic centers with standard guidelines not only leads to reduction in radiographic image quality but also wastes reso...
The aim of the present study was to evaluate the image quality of four direct digital radiographic systems. Radiographs were made of the maxillary central incisor and mandibular left molar regions of a dry skull, and an aluminum step-wedge. The X-ray generator operated at 10 mA. 60 and 70 kVp, and images were acquired with 3, 5, 8, 12, 24 and 48 exposure pulses. Six well-trained observers class...
Objectives: Little is known about the quality of life and clear cut radiographic grades of ankle arthritis in patients with indication for the total ankle replacement (TAR) comparing with patients without indication for TAR. This study was to compare the quality of life and radiographic grades of ankle arthritis in patients who had ankle arthritis with and without indication for TAR. Methods: F...
Background and purpose: Radiographic film repeat rate assessment is performed to appropriate profiting of existence resources in therapeutic wards. Multiple exposures of x-ray generators due to repeated radiographic examination can lead to amortization of the radiographic facilities and decrease their longevity and also increases the cost of facilities repair. On the other hand, its therapeut...
BACKGROUND: Knowledge of the accuracy of chest radiograph findings in acute lower respiratory infection in children is important when making clinical decisions. METHODS: I conducted a systematic review of agreement between and within observers in the detection of radiographic features of acute lower respiratory infections in children, and described the quality of the design and reporting of stu...
IntroductionA fine balance of image quality and radiation dose can be achieved by optimization to minimize stochastic and deterministic effects. This study aimed in ensuring that images of acceptable quality for common radiographic examinations in digital imaging were produced without causing harmful effects. Materials and MethodsThe study was conducted in three phases. The pre-optimization inv...
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