نتایج جستجو برای: radiation dosages diagnostic x ray
تعداد نتایج: 1129911 فیلتر نتایج به سال:
Patient dosimetry studies in diagnostic radiology in Nigeria have been on measurement of entrance skin dose and effective dose. Another important and easy to measure radiation dose descriptor that could be used to assess patient dose in radiological procedures is dose area product (DAP). Knowledge of DAP with location and projection of X-ray beam allows direct calculation of organ dose and effe...
In this paper, the parametric X-ray radiation (PXR) spectral-angular distribution in the framework of the dynamical and kinematical diffraction theory was investigated in details. It is shown that dynamical diffraction effects can be increase with intensity of radiation, increase threshold energy saturation and the change in polarization of the radiation. Therefore, some unique properties of P...
dose because, irrespective of the technology being used in individual cases, the benefits and risks of taking an X-ray need to be assessed. Whereas modern 3D imaging systems, such as computer tomography (CT) or conebeam computed tomography (CBCT), undoubtedly have brought significant advantages to dental diagnostics, they are attended by a higher radiation dose compared to 2D X-ray technology. ...
PURPOSE We aimed to evaluate the use of a dose monitoring program for calculating and comparing the diagnostic radiation doses in pediatric patients with neuroblastoma. METHODS We retrospectively reviewed diagnostic and therapeutic imaging studies performed on pediatric patients with neuroblastoma from 2003 to 2014. We calculated the mean effective dose per exam for X-ray, conventional comput...
background: although ionizing radiation is widely used to diagnose many diseases, the relevant hazards are known to be as an important limitation of its application. it is believed that the awareness of ionizing radiation dose values is one of the main stages in patient's radiation protection. the purpose of this study has been to investigate the level of physicians' knowledge about r...
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