Journal of Yeungnam Medical Science
- Volume 4 Issue 2
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- Pages.83-88
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- 1987
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- 2799-8010(eISSN)
A Study on Equivalent Square Field in High Energy Photon Beam
고에너지 Photon Beam에 있어서 Equivalent Square Field에 관한 고찰
- Kim, Sung-Kyu (Department of Therapeutic Radiology, College of Medicine, Yeungnam University) ;
- Shin, Sei-One (Department of Therapeutic Radiology, College of Medicine, Yeungnam University) ;
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Kim, Myung-Se
(Department of Therapeutic Radiology, College of Medicine, Yeungnam University)
- Published : 1987.12.30
Abstract
An analytic expression for equivalent square fields and a table are derived using the empirical representations obtained from the measured field size dependence of output for square field in a phantom. The expression is applicable to radiation fields that consistent with the following two assumptions Imposed on these representations. 1) It is a linear function of the logarithm of the field area, and 2) It is approximately the same function for both square and circular field of similar areas. In this paper, the derived tables and BJR table were consulted.
본 병원 18MeV 선형가속기에 대한 equivalent square field를 측정하여 다음과 같은 결과를 얻었다. 1.
Keywords