The Journal of Korean Society for Radiation Therapy (대한방사선치료학회지)
- Volume 1 Issue 1
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- Pages.47-51
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- 1985
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- 1598-8449(pISSN)
A Study of Tissue-equivalent Compensator for 10MV X-ray and Co-60 Gamma-ray
고에너지 방사선치료용 조직등가보상체에 관한 고찰
- CHOI Tae Jin (Department of Therapeutic Radiology Seoul National University Hospital) ;
- HONG Young Rak (Department of Therapeutic Radiology Seoul National University Hospital) ;
- LIM Charn Soo (Department of Therapeutic Radiology Seoul National University Hospital) ;
- JEUNG Ho Yong (Department of Therapeutic Radiology Seoul National University Hospital)
- Published : 1985.06.01
Abstract
Authors describe some useful data when constructing tissue-equivalent compensators which would compensate tissue deficit in the treatment field of high energy electromagnetic radiation Tissue equivalent compensator is made of lucite. The ratio of compensator thickness to the thickness of tissue deficit depends on radiation energy, field size and the distance from the compensator to patient skin. When the compensator is separated from skin surface, the thickness ratio is always smaller than 1.0. This means that the larger the separation, the contribution to the total dose by means of scattered radiation from a tissue equivalent compensator is smaller. Authors propose that the thickness of lucite as tissue equivalent compensator is 0.57 times tissue deficit and the separation between compensator and skin is at least 15m for Co-60 gamma ray and 25cm for 10MV X-ray.
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