标准编号：ISO/TR 24422:2022
中文名称：用于测量特定放射外科治疗装置物理特性的水等效体模的研制
英文名称：Development of a water equivalent phantom to measure the physical characteristics of specific radiosurgery treatment devices
发布日期：2022-12
标准范围
A water phantom is used to ensure the accurate measurement of absorbed dose delivered therapy machine as well as standardizing the dose distribution produced by the radi device. This document describes a detailed procedure for the construction and calibration of phantom and the results of its use in measuring the absorbed dose profile around the mec of a radiosurgery medical device, the full width at half maximum (FWHM) of the field an penumbra at the mechanical centre, as well as the associated uncertainties. According to IAEA TRS-483 document, the most common design recommended in G system is a hemisphere atop a water filled or compact polystyrene cylinder, and w polystyrene phantom, the measurement depth of the absorbed dose to water is repor centre of the hemisphere with the radius of 8 cm. This document mainly describes the procedure for measuring the absorbed dose distrib ® the mechanical centre of Gamma Knife and obtaining the FWHM and penumbra from it. T phantom is made of polystyrene and has a hemispherical shape in accordance with the des in IAEA TRS-483.
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