Radiation Oncology Journal
- Volume 12 Issue 2
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- Pages.253-262
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- 1994
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- 2234-1900(pISSN)
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- 2234-3156(eISSN)
Analysis of Radiation Field and Block Pattern for Optimal Size in Multileaf Collimator
치료조사면 및 블록 유형분석을 통한 적정 다엽 콜리메이터 규모에 관한 연구
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Ahn, Seoung-Do
(Department of Therapeutic Radiology, Asan Medical Center, College of Medicine, University of Ulsan) ;
- Yang, Kwang-Mo (Department of Therapeutic Radiology, Asan Medical Center, College of Medicine, University of Ulsan) ;
- Yi, Byong-Yong (Department of Therapeutic Radiology, Asan Medical Center, College of Medicine, University of Ulsan) ;
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Choi, Eun-Kyong
(Department of Therapeutic Radiology, Asan Medical Center, College of Medicine, University of Ulsan) ;
- Chang, Hye-Sook (Department of Therapeutic Radiology, Asan Medical Center, College of Medicine, University of Ulsan)
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안승도
(울산대학교 의과대학 서울중앙병원 치료방사선과학교실) ;
- 양광모 (울산대학교 의과대학 서울중앙병원 치료방사선과학교실) ;
- 이병용 (울산대학교 의과대학 서울중앙병원 치료방사선과학교실) ;
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최은경
(울산대학교 의과대학 서울중앙병원 치료방사선과학교실) ;
- 장혜숙 (울산대학교 의과대학 서울중앙병원 치료방사선과학교실)
- Published : 1994.06.01
Abstract
The patterns of the conventional radiation treatment fields and their shielding blocks are analysed to determine the optimal dimension of the MultiLeaf Collimator (MLC) which is considered as an essential tool for conformal therapy. Total 1109 radiation fields from 303 patients (203 from Asan Medical center, 50 from Baek Hosp and 50 from Hanyang Univ. Hosp.) were analysed for this study. Weighted case selection treatment site (from The Korean Society of Therapeutic Radiology 1993). Ninety one percent of total fields have shielding blocks. Y axis is defined as leaf movement direction and it is assumed that MLC is installed on the cranial-caudal direction. The length of X axis were distributed from 4cm to 40cm (less than 21cm for