نتایج جستجو برای: gamma radiation dosimetry
تعداد نتایج: 353726 فیلتر نتایج به سال:
In the event of a mass casualty radiation incident, the gamma-H2AX foci assay could be a useful tool to estimate radiation doses received by individuals. The rapid processing time of blood samples of just a few hours and the potential for batch processing, enabling high throughput, make the assay ideal for early triage categorisation to separate the 'worried well' from the low and critically ex...
Background: Commissioning tests are recommended before implementing Intensity Modulated Radiation Therapy. This study evaluated five different plans of IMRT mocks for different modulation indices. Materials and Methods: IMRT tests were done in slab phantom for both 6MV and 15 MV photon energies using a 2D array ion chamber dosimeter. Results: The acceptance criteria were based on 3% /3mm. All t...
TG-69 is a task group report of the AAPM on the use of radiographic film for dosimetry. Radiographic films have been used for radiation dosimetry since the discovery of x-rays and have become an integral part of dose verification for both routine quality assurance and for complex treatments such as soft wedges (dynamic and virtual), intensity modulated radiation therapy (IMRT), image guided rad...
چکیده ندارد.
The enormous advances in the understanding of human anatomy, physiology and pathology in recent decades have led to ever-improving methods of disease prevention, diagnosis and treatment. Many of these achievements have been enabled, at least in part, by advances in ionizing radiation detectors. Radiology has been transformed by the implementation of multi-slice CT and digital x-ray imaging syst...
background and objectives: nasturtium officinale w.t.aiton (brassicaceae) is used as an edible vegetable in various parts of iran. the aim of the present study was to investigate the protective activity of the methanolic extract of nasturtium officinale against gamma-radiation-induced hepatotoxicity in terms of histopathological changes. methods: male c57 mice were divided into 10 groups. group...
the radiophotoluminescence property of some materials makes it possible to use them for dosimetry purposes. the silver activated metaphoshate glass 1 as an rpl dosimeter when exposed to x. or y radiations , forms fluorescent centers with long lived states ( metastate ). the silver ions (ag+) in unirradiated state produces vacancies when energy is supplied by irradiation the release of electrons...
The level of development modern nuclear technologies forms a request for the new branches science. At same time, chemical dosimetry methods are also being improved [1, 2]. essence such consists in quantitative determination radiation-chemical damages to molecules substance when it is exposed ionizing radiation [3, 4]. Liquid and solid solutions organic dyes have intense bands optical absorption...
The International Centre for Low-Dose Radiation Research (ICLDRR) has assembled, in a single database, all published results from experimental radiation carcinogenesis in mammals. The database contains experimental conditions and outcomes for about 87,000 exposed animals (̃ 60,000 cancers) and 40,000 controls (̃ 19,000 cancers). Experiments were conducted with all types of ionizing radiation, at ...
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