نتایج جستجو برای: medical linear accelerators
تعداد نتایج: 1066062 فیلتر نتایج به سال:
Optimum shielding of the radiation from particle accelerators requires knowledge of the attenuation characteristics of the shielding material. The most common material for shielding this radiation is concrete, which can be made using various materials of different densities as aggregates. These different concrete mixes can have very different attenuation characteristics. Information about the a...
Abstract The acceleration of electrons in resonant linear accelerators (linacs) typically consists three main stages: (1) emission the from cathode and their pre-acceleration with a DC field to energy tens keV; (2) grouping electron beam into bunches synchronization correct phase high-frequency electromagnetic fields, (3) accelerating relativistic required energies. Although many books describe...
introduction intensity modulated radiation therapy (imrt) has made a significant progress in radiation therapy centers in recent years. in this method, each radiation beam is divided into many subfields that create a field with a modulated intensity. considering the complexity of this method, the quality control for imrt is a topic of interest for researchers. this article is about the various ...
Particle accelerators are engines of discovery and innovation. Design, construction and use of particle accelerators have made numerous scientific and technological achievements in recent decades, having an undeniable influence on society. In medicine and pharmacy, particle accelerators provide in more efficient treatment with fewer side effects. Disease diagnostics are how much straightforward...
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