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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국의학물리학회 의학물리 의학물리 제32권 제4호
- 발행연도
- 2021.12
- 수록면
- 145 - 152 (8page)
- DOI
- 10.14316/pmp.2021.32.4.145
이용수
초록· 키워드
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Purpose: During the treatments of cancer patients with a linear accelerator (LINAC) using photon beams with energies ≥8 MV, the components inside the LINAC head get activated through the interaction of photonuclear reaction (γ, n) and neutron capture (n, γ). We used spectroscopy and measured the dose rate for the LINAC in operation after the treatment ended.
Methods: We performed spectroscopy and dose rate measurements for three units of LINACs with a portable high-purity Germanium (HPGe) detector and a survey meter. The spectra were obtained after the beams were turned off. Spectroscopy was conducted for 3,600 seconds, and the dose rate was measured three times. We identified the radionuclides for each LINAC. Results: According to gamma spectroscopy results, most of the nuclides were short-lived radionuclides with half-lives of 100 days, except for 60Co, 65Zn, and 181W nuclides. The dose rate for three LINACs obtained immediately in front of the crosshair was in the range of 0.113 to 0.129 μSv/h. The maximum and minimum dose rates measured on weekends were 0.097 μSv/h and 0.092 μ Sv/h, respectively. Compared with the differences in weekday data, there was no significant difference between the data measured on Saturday and Sunday.
Conclusions: Most of the detected radionuclides had half-lives <100 days, and the dose rate decreased rapidly. For equipment that primarily used energies ≤10 MV, when the equipment was transferred after at least 10 minutes after shutting it down, it is expected that there will be little effect on the workers’ exposure.
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참고문헌 (19)
참고문헌 신청
Korea Institute of Nuclear Safety / 2020 / Current status of medical radiation devices
권나혜 / 2020 / Trend Analysis on Korean and International Management for Activated Material Waste from Medical Linear Accelerator / 의학물리 31(4):194~204
Çeçen Y / 2017 / Photoneutron flux measurement via neutron activation analysis in a radiotherapy bunker with an 18 MV linear accelerator / EPJ Web Conf 153:07006
Vichi S / 2020 / Activation study of a 15MeV LINAC via Monte Carlo simulations / Radiat Phys Chem 172:108758
이동연 / 2017 / 모의실험을 통한 선형가속기 부품과 차폐벽의 방사화 평가 / 한국콘텐츠학회 논문지 17(9):69~76
권나혜 / 2020 / Trend Analysis on Korean and International Management for Activated Material Waste from Medical Linear Accelerator / 의학물리 31(4):194~204
Çeçen Y / 2017 / Photoneutron flux measurement via neutron activation analysis in a radiotherapy bunker with an 18 MV linear accelerator / EPJ Web Conf 153:07006
Vichi S / 2020 / Activation study of a 15MeV LINAC via Monte Carlo simulations / Radiat Phys Chem 172:108758
이동연 / 2017 / 모의실험을 통한 선형가속기 부품과 차폐벽의 방사화 평가 / 한국콘텐츠학회 논문지 17(9):69~76
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