Journal of Yeungnam Medical Science
- Volume 8 Issue 2
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- Pages.114-120
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- 1991
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- 2799-8010(eISSN)
A Study on Dose Distribution of Small Irradiation Field in the Electron Therapy
전자선 치료에 있어서 작은 조사면적의 선량분포에 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 : 1991.12.30
Abstract
In electron therapy, low melting point alloy is used for shaping of the field. Electron field shaping material affect the output factor as well as the collimator system. The output factors of electron beams for shaped fields from NELAC-1018 were measured using ionization chamber of Farmer type in water phantom. The output factors of electron beams depend on the incident energy, inherent collimator system and the size of shaped field. Obtained results were followings. 1. In the smaller applicator, output varied extremely according to extent of collimator opening. 2. The higher energy, the output is less varied according to treatment field at small field.
영남대학병원 치료방사선과에 설치되어 있는 NELAC-1018의 작은 치료 면적에 대한 전자선출력 특성을 측정하여 다음과 같은 결과를 얻었다. 1.