Proceedings of the Korean Society of Medical Physics Conference (한국의학물리학회:학술대회논문집)
- 2002.09a
- /
- Pages.282-284
- /
- 2002
Monte Carlo Simulation of Small Photon Beam Measurements by Beam Intensity Scanner System(BISS)
- Park, Kwangyl (Institute of Functional Biomaterials and Biotechnology, Yonsei Univ., Korean Minjok Leadership Academy) ;
- Vahc, Young-Woo (Dept. of Physics, Institute of Basic Science, Wonju College of Medicine, Yonsei Univ.) ;
- Ohyun Kwon (Dept. of Physics, Institute of Basic Science, Wonju College of Medicine, Yonsei Univ.) ;
- Park, Kyung-Ran (Dept. of Radiation Oncology, Wonju College of Medicine, Yonsei Univ.) ;
- Lee, Yong-Ha (Dept. of Radiation Oncology, Wonju College of Medicine, Yonsei Univ.) ;
- Yi, Byung-Yong (Asan Medical Center, Univ. of Ulsan) ;
- Kim, Sookil (Dept. of Premedical School, Medical College of Koshin University)
- Published : 2002.09.01
Abstract
We have developed and used BISS as a radiation detector to verify patient dose and determine the physical characteristics of beams used in Stereotatic Radio Surgery(SRS) and Intensity Modulated Radiation Therapy(IMRT). In order to confirm the function and accuracy of our BISS, we simulate our measurements by BISS under the radiation of 6MV photons from a Varian Clinac 21EX equipped with a 60 leaf pairs MLC. For the simulation based on the Monte Carlo algorithm, which remains the most comprehensive and accurate theoretical method to verify beam profiles, we use the BEAM code. Compared with the measurements by BISS, our simulation of variously shaped phantom measurements show good agreements. Our simulation results can be used as a theoretical standard to compare and confirm measurements by BISS and other dosimeters such as ultramicro cylindrical ionization chamber(UCIC) and radiographic film.