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Updated: Jan 9, 2026

Dosimetry for Cell Irradiation using Orthovoltage 40-300 kV X-Ray Facilities
Published on: February 20, 2021
[Optimization of Radiation-shielding Wall Thickness and Evaluation of Attenuation Performance Due to Deterioration]
Ki-Yoon Lee1, Kyeong-Hwan Jung1, Jang-Oh Kim2
1강원대학교 보건의료과학과.
Abstract:
In accordance with Article 37 of the Medical Service Act in the Republic of Korea, medical institutions must be equipped with radiation-shielding facilities to utilize radiation for diagnostic purposes. Radiation-shielding facilities use materials such as lead, concrete, and lead glass and are designed to shield against radiation and prevent harmful effects on the human body. Therefore, determining the appropriate thickness of radiation protection walls based on radiation intensity is crucial in these facilities. In this study, we employed Monte Carlo simulations to model a radiation protection wall constructed in a clinical setting and composed of three layers: concrete-lead-concrete. The optimal shielding thickness was calculated for this configuration. Furthermore, given that radiation shielding facilities can deteriorate over time owing to external factors, potentially reducing their shielding effectiveness, we evaluated the shielding efficiency under three hypothetical aging scenarios. This study aims to assess the optimal shielding thickness and the impact of aging on the shielding efficiency of radiation-shielding walls.
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