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• 영문명: An Experimental Dosimetry of Irregularly Shaped Fields Using Therapeutic Planning Computer
• 발행기관: 대한방사선종양학회
• 저자명: 권형철(Hyoung Cheol Kwon) 오윤경(Yoon Kyeong Oh) 윤세철(Sei Chul Yonn) 박용휘(Young Whee Bahk)
• 간행물 정보: 『대한방사선종양학회지』제2권 제2호, 281~285쪽, 전체 5쪽
• 주제분류: 의약학 > 종양학
• 파일형태: PDF
• 발행일자: 1984.12.30

영문 초록

The authors have intended to measure intrinsic dose distribution by Farmer dosimeter in irregularly shaped fields such as L.M. and T shape models in order to determine dose inhomogeneity in those models. We made 2 off-axis points in each model and measured the depth dose at 1.5, 5 and 9 cm below surface. The results showed 1~3% dose discrepancy between 2 points. We also measure the depth dose by geometric approximation and computer calculation in those models and came to the conclusion that computer calculation using Clarkson's principle is simpler and the measurements are closer to the ideal data obtained by the experiment in three models of irregularly shaped fields than those of geometric approximation method.