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50–300 kVp X-ray Transmission Ratios for Lead, Steel and Concrete

Authors
 Tae Hwan Kim  ;  Kum Bae Kim  ;  Geun Beom Kim  ;  Dong Wook Kim  ;  Sang Rok Kim  ;  Sang Hyoun Choi 
Citation
 Progress in Medical Physics, Vol.33(4) : 164-171, 2022-12 
Journal Title
Progress in Medical Physics
ISSN
 2508-4445 
Issue Date
2022-12
Keywords
Half-value layers ; Tenth-value layers ; Attenuation rate ; Radiation protection ; X-ray attenuation
Abstract
The number of facilities using radiation generators increases and related regulations are strengthened, the establishment of a shielding management and evaluation technology has become important. The characteristics of the radiation generator used in previous report differ from those of currently available high-frequency radiation generators. This study aimed to manufacture lead, iron, and concrete shielding materials for the re-verification of half-value layers, tenth-value layers, and attenuation curve. For a comparison of attenuation ratio, iron, lead, and concrete shields were manufactured in this study. The initial dose was measured without shielding materials, and doses measured under different types and thicknesses of shielding material were compared with the initial dose to calculate the transmission rate on 50–300 kVp X-ray. All the three shielding materials showed a tendency to require greater shielding thickness for higher energy. The attenuation graph showed an exponential shape as the thickness decreased and a straight line as the thickness increased. The difference between the measurement results and the previous study, except in extrapolated parts, may be due to the differences in the radiation generation characteristics between the generators used in the two studies. The attenuated graph measured in this study better reflects the characteristics of current radiation generators, which would be more effective for shield designing.
Files in This Item:
T202300681.pdf Download
DOI
10.14316/pmp.2022.33.4.164
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
Yonsei Authors
Kim, Dong Wook(김동욱) ORCID logo https://orcid.org/0000-0002-5819-9783
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/193147
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