대한방사선기술학회지:방사선기술과학 (Journal of radiological science and technology)
- 제24권2호
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- Pages.49-52
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- 2001
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- 2288-3509(pISSN)
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- 2384-1168(eISSN)
가상쐐기와 기존쐐기의 물리적 특성 비교
Physical Characteristics Comparison of Virtual Wedge Device with Physical Wedge
- 조정근 (국립암센터 방사선종양학과) ;
- 최계숙 (국립암센터 방사선종양학과) ;
- 임청환 (한서대학교 방사선학과) ;
- 김정구 (한서대학교 방사선학과) ;
- 정홍량 (한서대학교 방사선학과) ;
-
이정옥
(원광보건대학 방사선과) ;
- 이만구 (원광보건대학 방사선과)
- Cho, Jung-Keun (Department of Radiation Oncology, National Cancer Center) ;
- Choi, Kye-Sook (Department of Radiation Oncology, National Cancer Center) ;
- Lim, Cheong-Hwan (Department of Radiology, Hanseo University) ;
- Kim, Jeong-Koo (Department of Radiology, Hanseo University) ;
- Jung, Hong-Ryang (Department of Radiology, Hanseo University) ;
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Lee, Jung-Ok
(Department of Radiology, Wonkwang Health Science College) ;
- Lee, Man-Goo (Department of Radiology, Wonkwang Health Science College)
- 발행 : 2001.12.31
초록
We compared the characteristics of Siemens virtual wedge device with physical wedges for clinical application. We investigated the characteristics of virtual and physical wedges for various wedge angles (15, 30, 45, and 60) using 6- and 15-MV photon beams. Wedge factors were measured in water using an ion chamber for various field sizes and depths. In case of virtual wedge device, as upper jaw moves during irradiation, wedge angles were estimated by accumulated doses. These measurements were performed at off-axis points perpendicular to the beam central axis in water for a
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