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OPTIMAL BETA-RAY SHIELDING THICKNESSES FOR DIFFERENT THERAPEUTIC RADIONUCLIDES AND SHIELDING MATERIALS

Authors
Cho, Yong InKim, Ja MeeKim, Jung Hoon
Issue Date
4월-2017
Publisher
OXFORD UNIV PRESS
Citation
RADIATION PROTECTION DOSIMETRY, v.174, no.1, pp.13 - 20
Indexed
SCIE
SCOPUS
Journal Title
RADIATION PROTECTION DOSIMETRY
Volume
174
Number
1
Start Page
13
End Page
20
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/83960
DOI
10.1093/rpd/ncw076
ISSN
0144-8420
Abstract
To better understand the distribution of deposited energy of beta and gamma rays according to changes in shielding materials and thicknesses when radionuclides are used for therapeutic nuclear medicine, a simulation was conducted. The results showed that due to the physical characteristics of each therapeutic radionuclide, the thicknesses of shielding materials at which beta-ray shielding takes place varied. Additional analysis of the shielding of gamma ray was conducted for radionuclides that emit both beta and gamma rays simultaneously with results showing shielding effects proportional to the atomic number and density of the shielding materials. Also, analysis of bremsstrahlung emission after beta-ray interactions in the simulation revealed that the occurrence of bremsstrahlung was relatively lower than theoretically calculated and varied depending on different radionuclides.
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