Nuclear Engineering and Technology

  • 제52권10호
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  • Pages.2334-2338
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  • 2020
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Dose rate measurement of Leksell Gamma Knife Perfexion using a 3D printed plastic scintillation dosimeter

  • Lee, Sangmin (Department of Nuclear Engineering, Hanyang University) ;
  • Kim, Tae Hoon (Department of Nuclear Engineering, Hanyang University) ;
  • Jeong, Jae Young (Department of Nuclear Engineering, Hanyang University) ;
  • Son, Jaebum (Department of Nuclear Engineering, Hanyang University) ;
  • Kim, Dong Geon (Department of Nuclear Engineering, Hanyang University) ;
  • Cho, Gyu-Seok (Research Team of Radiological Physics & Engineering, Korea Institute of Radiological and Medical Science) ;
  • Choi, Sang Hyoun (Research Team of Radiological Physics & Engineering, Korea Institute of Radiological and Medical Science) ;
  • Chung, Hyun-Tai (Department of Neurosurgery, Seoul National University College of Medicine) ;
  • Kim, Yong Kyun (Department of Nuclear Engineering, Hanyang University)
  • 투고 : 2020.01.20
  • 심사 : 2020.03.21
  • 발행 : 2020.10.25
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초록

In recent years, 3D printing technology has received significant research attention. Additionally, 3D printing technology is being applied to study radiation dosimeters of various materials. In this study, a plastic scintillator for 3D printing was developed in a laboratory and used to manufacture a plastic scintillation dosimeter (PSD) with a shape identical to that of the ionization chamber PTW31010. The 16-mm beam of Gamma Knife® Perfexion™ was irradiated to derive the absorbed dose rates of the PSD and PTW31010; they were subsequently compared with the dose rates of the treatment plan. The differences in the dose rates of the Gamma Knife treatment plan and the absorbed dose rates of PTW31010 were within 0.87%. The difference between the dose rates of the Gamma Knife treatment plan and the absorbed dose rates of the PSD were within 4.1%. A linear fit of the absorbed dose rates of four shots involving different dose rates and irradiation angles yielded an adjusted R-square value exceeding 0.9999. A total of 10 repeated measurements were conducted for the same shot to confirm its reproducibility, with a relative error of 0.56%.

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