AlcyonCo-60 감마선의 전자오염

• 영문명: Contamination of an Alcyon Co-60 Gamma rays by Electrons
• 발행기관: 대한방사선종양학회
• 저자명: 유명진(Meong-Jin Yoo)·김동원(Dong-Won Kim)·김철수(Chul-Soo Kim)·정운혁(Woon-Hyuk Chung)
• 간행물 정보: 『대한방사선종양학회지』제6권 제1호, 109~116쪽, 전체 8쪽
• 주제분류: 의약학 > 종양학
• 파일형태: PDF
• 발행일자: 1988.06.30

영문 초록

The Alcyon Co-60 gamma rays was studied for electron contamination. The surface dose, attributable almost entirely to contamination electrons, has a linear dependence on field width for square fields and an inverse square dependence on distance from the bottom of the fixed head assembly. Build-up and surface dose measurements were taken with and without an acrylic blocking tray in place. Further measurements were made with a copper filter designed to reduce secondary electrons emitted by photon interactions with the acrylic tray. The results are discussed in relation to skin sparing effect for radiation therapy patients. And to achieve the maximum skin sparing effect, the selection of the optimum SSD and TSD is needed.

키워드

Electron contamination Electron Filter SSD TSD Surface dose