Abstract
X-ray shields used for medical purposes are manufactured using lead, which is inexpensive and easy to manufacture. However, as lead can be a major factor contributing toward environmental contamination, such as lead poisoning, a radiation-shielding plate was manufactured in this study using a tungsten plate, an eco-friendly material, through a rolling process at different temperatures. In addition, the shielding plate produced via the hot-rolling method exhibited better shielding performance than that of the plate produced using the cold-rolling method, and the multilayer structure was well formed, as indicated in the cross-sectional image analysis. Upon applying a peak voltage of 100 kVp to the X-ray tube, the shielding performance observed was 80% and 96% when the plate thickness was 0.1 mm and 0.3 mm, respectively. Therefore, it is expected that, in the future, the pure tungsten-based shield presented in this study will replace lead plates, owing to its superior standardization and reproducibility of the shielding performance.
Highlights
Lead is the most widely used material for radiation shielding in medical institutions [1]
Most shielding plates used in medical institutions used shielding and observed to correspond to a smaller range than those used in working areas gamma rays
The 0.3 mm-thick tungsten plate used in this study showed an excellent shielding performance as a replacement for lead; it can be considered as an eco-friendly material for use in radiation shielding in the future
Summary
Lead is the most widely used material for radiation shielding in medical institutions [1]. Because of its excellent processability, it is sometimes used as a plate or mixed with a polymer material to produce a sheet or film [2]. An eco-friendly material with excellent shielding performance, processability, and compatibility with other materials is a topic of research interest [4,5]. A substitute for lead, is one of the most widely used radiation-shielding materials in medical institutions [6]. It has an atomic number of 74, an atomic weight of
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