Skyshine photon doses from 6 and 10 MV medical linear accelerators
نویسندگان
چکیده
منابع مشابه
Skyshine photon doses from 6 and 10 MV medical linear accelerators
The skyshine radiation phenomenon consists of the scattering of primary photon beams in the atmosphere above the roof of a medical linear accelerator facility, generating an additional dose at ground level in the vicinity of the treatment room. Thus, with respect to radioprotection, this situation plays an important role when the roof is designed with little shielding and there are buildings ne...
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Background: Skyshine describes the radiation scattered by the atmosphere above a LINAC facility to a point on the ground. The aim of this study was to measure the skyshine photon dose rates from two different (9 MV and 18 MV) medical linear accelerators. Materials and Methods: The photon beam was directed upward (180° gantry position), with a maximum photon field size (40 × 40 cm2) at the isoce...
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AIM This work investigated the dosimetric properties of a 10-MV photon beam emitted from a medical linear accelerator (linac) with no flattening filter (FF). The aim of this study is to analyze the radiation fluence and energy emitted from the flattening filter free (FFF) linac using Monte Carlo (MC) simulations. MATERIALS AND METHODS The FFF linac was created by removing the FF from a linac ...
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Beginning this year, AEC contractors are being required to submit dose evaluations as low as 1.7 mrem per year to the surrounding public from their installations. This small incremental dose exists within the framework of a natural background of about 130 mrem per year. Some of the pitfalls in estimating these small doses, especially with regard to skyshine, are discussed. It is shown that, for...
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Introduction: According to the American Society of Radiation Oncology, all patients receive radiation therapy during their illness, where radiation is delivered by the medical linear accelerator (Linac). The aim of this study was to evaluate the quality assurance (QA) of the Linac in analyzing the used dose profile in the treatment of cancer tumors. Materi...
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ژورنال
عنوان ژورنال: Journal of Applied Clinical Medical Physics
سال: 2012
ISSN: 1526-9914,1526-9914
DOI: 10.1120/jacmp.v13i1.3671