The Journal of Korean Society for Radiation Therapy (대한방사선치료학회지)

Korean Society for Radiation Therapy (대한방사선치료학회)
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Dosimetric characteristics of an independent collimator system using measurements performed quarter fields.

Independent jaw를 이용한 비대칭조사면의 선량분포에 관한 연구

  • 김건오 (고대대학교의료원 안암병원 방사선종양학과) ;
  • 정세영 (고대대학교의료원 안암병원 방사선종양학과) ;
  • 김영범 (고대대학교의료원 안암병원 방사선종양학과) ;
  • 권영호 (고대대학교의료원 안암병원 방사선종양학과)
  • Published : 2002.12.01
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Abstract

The mordem linear accelerators are equipped with X-ray collimators that can be moved independently to allow asymmetric fields with field centers positioned away from the true central axis of the beam. We have studied the dosimetric of an independent collimator system using measurements performed quarter fields. The field size factors for asymmetric fields are compared to those for symmetric fields. Dosimetric measurements include portent depth don, beam penumbra and shape of isodose curves for symmetric and quarter fields.

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