Tsalafoutas I A, Yakoumakis E, Sandilos P
Medical Physics Unit, "Konstantopoulio-Agia Olga" Hospital, 3-5 Agias Olgas, Nea Ionia, 142 33, Athens, Greece.
Br J Radiol. 2003 Oct;76(910):731-7. doi: 10.1259/bjr/21741358.
In this study a new model for calculating shielding requirements in diagnostic X-ray facilities is presented. It is based on the combination and modification of models and concepts originally proposed by other authors in order to calculate barrier requirements in diagnostic X-ray facilities accurately and realistically without unjustified exaggerations. With this model, multiple sources of radiation operating at different potentials, leakage radiation reduction when operating at potentials less than the maximum rated value, secondary radiation use factors reduction for primary barriers, attenuation by image receptor hardware and existing building materials are all taken into account. Examples of shielding calculations for typical cases are given illustrating the differences between the various models and concepts proposed, as well as the potential reduction in shielding requirements without compromising the radiation protection of public and staff.
本研究提出了一种用于计算诊断X射线设施屏蔽要求的新模型。它基于其他作者最初提出的模型和概念的组合与修改，以便准确、实际地计算诊断X射线设施的防护屏障要求，而不会出现不合理的夸大。使用该模型时，会考虑多个以不同电位运行的辐射源、在低于最大额定值的电位下运行时的泄漏辐射减少、主防护屏障的二次辐射使用因子降低、图像受体硬件和现有建筑材料的衰减。给出了典型案例的屏蔽计算示例，说明了所提出的各种模型和概念之间的差异，以及在不影响公众和工作人员辐射防护的情况下屏蔽要求的潜在降低。
