Journal of the Korea Safety Management & Science (대한안전경영과학회지)

Korea Safety Management & Science (대한안전경영과학회)
권호 표지
DOI QR코드

DOI QR Code

Study of photon beam quality tool at magnetic field change in bending magnet

편향전자석의 자장변화에 따른 광자선 선질평가에 관한 고찰

  • Kim, Jeong-Ho (Dept. of Radiatioin Oncology, Konyang University Hospital) ;
  • Yoo, Se-Jong (Dept. of Diagnostic Radiology, Konyang University Hospital) ;
  • Park, Myeong-Cheol (Dept. of Diagnostic Radiology, Konyang University Hospital) ;
  • Bae, Seok-Hwan (Dept. of Radiology, Konyang University) ;
  • Kim, Ki-Jin (Dept. of Nuclear Medicine, Konyang University Hospital)
  • 김정호 (건양대학교병원 방사선종양학과) ;
  • 유세종 (건양대학교병원 영상의학과) ;
  • 박명철 (건양대학교병원 영상의학과) ;
  • 배석환 (건양대학교 방사선학과) ;
  • 김기진 (건양대학교병원 핵의학과)
  • Received : 2014.07.15
  • Accepted : 2014.12.18
  • Published : 2014.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Beam quality is changed about magnetic field of bending magnet. Evaluation of beam quality using PDD(Percentage Depth Dose) at 10cm depth at recommendation of AAPM(America Academy of Pain Medicine). However this evaluation shows fragmentary element. Therefore this study is applied to three value, 10cm divided by 5cm depth PDD, 20cm divided by 10cm depth PDD, 30cm divided by 20cm depth PDD, at change the magnetic field. PDD is measured at magnetic field changed ${\pm}1%$, ${\pm}2%$ at 6MV(Mega Voltage), 10MV photon. The plan technique is 3 portal plan using Core-Plan at human pelvic phantom. Conventional and presented methods are compared at maximum and minimum dose. The presented method increased discernment of relieve the unequal distribution and energy area than conventional method. Henceforth, application of presented method will be considered. Development of energy measurement method and detector miniaturization will be needed about continuous study.

Keywords

References

  1. S. R. Ahuja, K. D. Hong, K. S. Hong, et al., "The Rapport Multimedia Conferencing System: A Software Overviews", Proc. of 2nd IEEE Conference on Computer Workstations, pp. 52-58, March, 1988.
  2. Quality assurance for dosimetry in radiotherapy, Korea Food & Drug Administration, 2007.
  3. The 5th Survey on the Status of Nuclear Industries in 1999, Korea Institute of Nuclear Safety, 1999.
  4. Development of 3-Dimensional Dosimetry Technique for Therapeutic Radiation, Ministry of Science and Technology, 2012.
  5. ICRP Publication 86: Prevention of Accidental Exposure to Patients Undergoing Radiation Therapy, International Commission on Radiological Protection, 2000.
  6. IAEA Report Series No. 17: Lessons learned from accidental exposures in radiotherapy, International Atomic Energy Agency, 2000.
  7. AAPM TG No. 35: Medical Accelerator Safety considerations, American Association of Physicist in Medicine, 1993.
  8. R. N. Lee, S. J. Lee, J. H. Choi, "Comparison of QA Protocols for Linear Accelerator Published in Europe, America, and Japan", Med Phy, pp. 20-27, 2003.
  9. H. D. Huh, S. Y. Park, R. N. Lee, "Comparison of Calibration Methode of 192Ir Source for High Dose Rate Brachytherapy", Med, Phy, pp. 653-661, 2004.
  10. K. H. Cho, J. H. Choi, D. O. Shin, S. I. Kwon, D. H. Choi, Y. H. Kim, S. H. Lee, "Development and Evaluation of Quality Assurance Worksheet for the radiation Treatment Planning System", Med Phy, pp. 2762-2792, 2004.
  11. H. D. Huh, S. H. Kim, S. J. Cho, et al., "The analysis of Dose in Rectum by Multi Purpose Brachytherapy Phantom", Jpn J Clin Oncol, pp. 223-229, 2005.
  12. AAPM TG No. 13: Practical Aspects of Quality Assurance in radiotherapy, American Association of Physicist in Medicine, 1984.
  13. ACMP: Radiation Control and Quality Asuurance in Radiation Oncology a Suggested Protocol, American College of Medical Physics, 1986.
  14. ESTRO: Practical Guidline for the Implementation of a Quality System in Raiotherapy, pp. 5-112, 1998.
  15. WHO: Quality Assurance in Radiotherapy, World Health Organization, 1988.
  16. IAEA-TECDOC-1079: Calibration of brachytherapy sources, International Atomic Energy Agency, 1999.
  17. IAEA-TECDOC-989: Quality Assurance in Radiotherapy, International Atomic Energy Agency, 1997.
  18. AAPM Report No. 41: Remote afterloading technology, American Association of Physicists in Medicine, 1993.
  19. AAPM Report No. 43: Dosimetery of interstitial Brachytherapy Source, American Association of Physicists in Medicine, 1995.
  20. AAPM TG No. 56: Code of particle for brachytherapy physics, American Association of Physicists in Medicine, 1997.
  21. AAPM TG No. 40: Comprehensive QA for Radiation Oncology, American Association of Physicist in Medicine, 1994.