background identification of common technical errors during preparation of panoramic radiographs, how affect the quality and interpretation of the radiographs and the techniques used to deal with such errors, might help prevent unnecessary radiation to patients and save their time and money. objectives the current study aimed to identify common errors in the panoramic radiographs taken by post-...

the present study investigated bacterial contamination of radiography equipment in radiology departments of kermanshah university of medical sciences. in this study 196 samples had taken from radiography equipment surfaces of hospitals. the results showed that bacterial contaminations were existed in 91.7% of samples. the highest frequency of bacterial colonies was coagulase negative staphyloco...

Dynamic radiography had been used for motion analysis of the wrist joint since 1980s. But only limited images could be obtained with high exposure doses in conventional equipment. In recent years, advance equipment for dynamic radiography was developed, and thus, various images could be obtained with low exposure doses and without distortion. In this session, I would like to talk about our stud...

introduction the main goal of this study was to perform quality control test on all radiography units operating in golestan province of iran. materials and methods forty-four x-ray units were examined based on general accepted programs for quality control. eight parameters including kvp accuracy, kvp reproducibility, ma-time reciprocity, exposure linearity, exposure reproducibility, timer accur...

Digital radiography is gaining in popularity and many dentists are considering changing from a film-based system to this new technology. Dentists must clearly define their objectives for adopting digital radiography and be aware of the problems that may be encountered with this equipment, so that they can make an informed purchasing decision. This article provides an overview of digital radiogr...

Introduction: Regular implementation of quality control (QC) program in diagnostic X-ray facilities may affect both image quality and patient radiation dose due to the changes in exposure parameters. Therefore, this study aimed to investigate the status of randomly selected conventional radiographic X-ray devices installed in radiology centers of Great Khorasan Province, Iran, to produce the da...

conclusion radiology equipment in tehran university of medical sciences have potential capacity, but they need repair, and better maintenance and management and application of standards for the imaging system needs organized supervisory mechanisms. materials and methods the study was performed in 16 hospitals, 4 faculties and three healthcare centers of tehran university of medical sciences. we...

Introduction: The purpose of the current study was to investigate the effect of X-ray spectra on the sensitivity of a polymer gel dosimeter imaged with a conventional computed tomography (CT) scanner. Material and Methods: The whole process of CT imaging of an irradiated polymer gel was simulated by MCNPX Monte Carlo (MC) code. The imaging of polyacrylamide gel was accomplished by means of a co...