نتایج جستجو برای: diagnostic radiation fields
تعداد نتایج: 751516 فیلتر نتایج به سال:
Scattering of electromagnetic radiation by an object of arbitrary shape or a structured surface, infinite in extent, is considered. When radiation is incident on an interface separating vacuum from a material medium, a current density is induced in the bulk and a surface current density may appear on the boundary surface. The electromagnetic field is then the sum of the incident field and the f...
Introduction: The aim of present study was to estimate effective dose from most common procedures performed in nuclear medicine departments of Golestan province. Methods: Data of nuclear medicine procedures performed in 2 nuclear medicine departments in Golestan province were collected during 4 years. Effective dose, collective effective dose and effective dose per examination were calculated ...
We present the results of one and three-dimensional radiative transfer calculations of polarized spectra emerging from snapshots of radiation magnetohydrodynamical simulations of the local vertical structure of black hole accretion disks. The simulations cover a wide range of physical regimes relevant for the high/soft state of black hole X-ray binaries. We constrain the uncertainties in theore...
introduction: cone beam computed tomography (cbct) is a new method that is able to provide three-dimensional images in radiology and is useful for dentomaxillofacial imaging. this study aimed to investigate the cases administrated cbct by dentists of kerman (2015 year). methods: this cross-sectional study was conducted on dentists in kerman. the data were gathered using standard research questi...
progression or recurrence (TPR) in its clinical presentation and imaging findings in brain tumor patients. In this issue, Korchi et al describe imaging appearances of five consecutive cases of RN from 73 skull-based tumors treated with proton-beam radiotherapy (RT) in Switzerland.1 An important feature of this study is the selection of patients with extra-axial tumors that tend to recur locally...
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