대한방사선치료학회지 (The Journal of Korean Society for Radiation Therapy)
- 제14권1호
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- Pages.109-116
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- 2002
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- 1598-8449(pISSN)
Independent jaw를 이용한 비대칭조사면의 선량분포에 관한 연구
Dosimetric characteristics of an independent collimator system using measurements performed quarter fields.
초록
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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