학술논문
Longitudinal Section Dose Distribution Accuracy assessment of Tomotherapy
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- 영문명
- 발행기관
- 한국방사선학회
- 저자명
- 김동현 박마리 박주연 신원희 윤교훈 이종민 이한솔 최용우 김가중 백금문
- 간행물 정보
- 『한국방사선학회 학술대회 논문집』한국방사선학회 2017년 추계종합학술대회논문집, 58~58쪽, 전체 1쪽
- 주제분류
- 공학 > 기타공학
- 파일형태
- 발행일자
- 2017.11.10
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국문 초록
토모테라피 방사선치료시 나선형 방식으로 넓은 횡단면 치료를 할 수 있기 때문에 기존 횡단면의 선량분포 정확성 검증과 더불어 종단면의 선량분포 정확성 평가도 중요한 정도관리의 항목으로 여겨진다. 이에 본 연구는 토모테라피의 종단면의 선량분포 정확성을 평가하고자 한다. 본 실험을 통해 토모테라피의 종단면의 선량분포 정확성 평가를 위해 총 두 가지 방법으로 실험을 진행하였다. 첫 번째 실험을 위해 Slab Phantom과 Ion Chamber를 이용하였고, Field Width를 1.0 cm, 2.5 cm, 5.0 cm 로 총 4회 조사하였다. 두 번째 실험 방법으로는 치료 범위를 10 cm 로 설정 후 높이가 1 cm 인 Solid Water Phantom을 30개를 쌓은 후 그 중간지점인 15 cm 에 EBT Film을 위치 시켜 위 실험과 동일한 Field Width 조건으로 선량을 측정하였다. 정도관리 TG-148 보고서의 권장사항 FWHM ± 1 % 로 Field Width 3가지 조건 모두 허용오차범위에 있는 것을 확인했다. 또한 Flatness of Dose도 평균 2.08 % 로 나타났으며 총 평균치가 3 % 내에 포함되었고 이로 인해 토모테라피 방사선 치료 시 종단면의 선량분포 정확성을 확인 할 수 있었다.
영문 초록
목차
키워드
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