Radiation Oncology Journal

The Korean Society for Radiation Oncology (대한방사선종양학회)
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Dose Characteristics for IORT Applicator of ML-15MDX Electron Beam

ML-15MDX 술중조사용 Applicator에 의한 전자선선량 특성

  • Choi, Tae-Jin (Department of Therapeutic Radiology, School of Medicine, Keimyung University) ;
  • Lee, Ho-Joon (Department of Therapeutic Radiology, School of Medicine, Keimyung University) ;
  • Kim, Yeung-Ae (Department of Therapeutic Radiology, School of Medicine, Keimyung University) ;
  • Kim, Jin-Hee (Department of Therapeutic Radiology, School of Medicine, Keimyung University) ;
  • Kim, Ok-Bae (Department of Therapeutic Radiology, School of Medicine, Keimyung University)
  • 최태진 (계명대학교 의과대학 치료방사선과학교실) ;
  • 이호준 (계명대학교 의과대학 치료방사선과학교실) ;
  • 김영애 (계명대학교 의과대학 치료방사선과학교실) ;
  • 김진희 (계명대학교 의과대학 치료방사선과학교실) ;
  • 김옥배 (계명대학교 의과대학 치료방사선과학교실)
  • Published : 1993.12.01
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Abstract

Experimental measurements of dose characteristics with pentagonal applicator at nominal energy of 4, 6, 9, 12 and 15 MeV electron beam were performed for intraoperative radiotherapy (IORT) in ML-15MDX linear accelerator. This paper presents the percent depth dose, surface dose, beam flatness and output factors of using the IORT applicator in different electron beam energy. The output factor showed as a 24 percent higher in IORT applicator than that of reference $10{\times}10cm^2$ applicator. The surface dose of using the IORT applicator showed 7.7 and 2.7 percent higher than that of reference field in 4 and 15 MeV electron beam, respectively. In our experiments, the variation of percent depth dose was very small but the output factor and flatnees at 0.5 cm depth have showed a large value in IORT applicator.

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