Archer B R, Thornby J I, Bushong S C
Health Phys. 1983 May;44(5):507-17. doi: 10.1097/00004032-198305000-00005.
A series of nomograms that simplify determination of diagnostic X-ray shielding requirements with lead are presented. All recommendations of the NCRP, except that to "add one half value layer" in determining secondary barriers, were followed in the production of these curves. For secondary barriers, the shielding required to reduce the weekly exposure to the applicable MPD has been determined. This eliminates the over-shielding inherent in the "add one HVL" approximation and allows a variety of more cost effective materials to be considered for secondary barriers.
本文展示了一系列简化铅制诊断X射线屏蔽要求测定的列线图。在绘制这些曲线时，遵循了美国国家辐射防护与测量委员会（NCRP）的所有建议，但在确定次级防护屏蔽时“增加一个半价层”这一建议除外。对于次级防护屏蔽，已确定了将每周暴露剂量降低至适用的最大允许剂量（MPD）所需的屏蔽量。这消除了“增加一个半价层”近似方法中固有的过度屏蔽问题，并允许考虑多种更具成本效益的材料用于次级防护屏蔽。
