Progress in Medical Physics (한국의학물리학회지:의학물리)

Korean Society of Medical Physics (한국의학물리학회)
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Use of Statistical Process Control for Quality Assurance in Radiation Therapy

방사선치료에서의 품질보증을 위한 통계적공정관리의 활용

  • Cheong, Kwang-Ho (Department of Radiation Oncology, Hallym University College of Medicine)
  • 정광호 (한림대학교 의과대학 방사선종양학교실)
  • Received : 2015.05.09
  • Accepted : 2015.06.17
  • Published : 2015.06.30
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Abstract

The goal of quality assurance (QA) is to minimize systematic errors in order to maintain the quality of a certain process. Statistical process control (SPC) has been utilized for QA in radiation therapy field since 2005 and is changing QA paradigm. Its purpose is to maintain a process within the given control limits while monitoring of error trends such as variation or dispersion. SPC can be applied to all QA aspects of radiotherapy; however, a medical physicist should have enough knowledge about the application of SPC to QC/QA procedures. In this paper, the author introduce a concept of SPC and review some previously reported studies those used SPC for QA in radiation therapy.

품질보증의 목적은 공정의 품질을 유지하기 위하여 계통적인 오류를 최소화하는 것이다. 통계적공정관리는 2005년 이후 방사선치료분야에서도 이용되기 시작하였으며 품질보증의 패러다임을 바꾸어가고 있다. 통계적공정관리의 목적은 공정의 안정성을 관리한계 내에서 유지하며 변동의 양상도 감시하기 위한 것이다. 통계적공정관리는 방사선치료 품질보증 전 분야에 적용 가능하지만, 이를 제대로 활용하기 위해서는 통계적공정관리에 대한 지식이 필요하다. 본 논문에서는 통계적공정관리의 개념을 설명하고 방사선치료분야에서 이를 활용한 연구들을 소개하였다.

Keywords

References

  1. Pawlicki T, Mundt AJ: Quality in radiation oncology. Med. Phys. 34(5):1529-1534 (2007) https://doi.org/10.1118/1.2727748
  2. Klein EE, Hanley J, Bayouth J, et al.: Task group 142 report: Quality assurance of medical accelerators. Med. Phys. 36(9):4197-4212 (2009) https://doi.org/10.1118/1.3190392
  3. Lee SH: Engineering Statistics and Data Analysis using Minitab, EreTec (2008)
  4. AIAG: Statistical process control (SPC) reference manual 2nd ed., AIAG (2005)
  5. Pawlicki T, Chera B, Ning T, Marks LB: The systematic application of quality measures and process control in clinical radiation oncology. Semin. Radiat. Oncol. 22(1):70-76 (2012) https://doi.org/10.1016/j.semradonc.2011.09.006
  6. Pawlicki T, Whitaker M: Variation and control of process behavior. Int. J. Radiat. Oncol. Biol. Phys. 71(1 Suppl):S210-4 (2008) https://doi.org/10.1016/j.ijrobp.2007.05.096
  7. http://en.wikipedia.org/wiki/Control_chart
  8. Sanghangthum T, Suriyapee S, Srisatit S, Pawlicki T: Retrospective analysis of linear accelerator output constancy checks using process control techniques. J. Appl. Clin. Med. Phys. 14(1):4032 (2013)
  9. Gerard K, Grandhaye JP, Marchesi V, Kafrouni H, Husson F, Aletti P: A comprehensive analysis of the IMRT dose delivery process using statistical process control (SPC). Med. Phys. 36(4):1275-1285 (2009) https://doi.org/10.1118/1.3089793
  10. Oh SA, Yea JW, Kim SW, Lee R, Kim SK: Analysis of output constancy checks using process control techniques in linear accelerators. Progress. Med. Phys. 25(3):185-192 https://doi.org/10.14316/pmp.2014.25.3.185
  11. Able CM, Hampton CJ, Baydush AH, Munley MT: Initial investigation using statistical process control for quality control of accelerator beam steering. Radiat. Oncol. 6180-717X-6-180 (2011)
  12. Han Y: Review on the pre-treatment quality assurance for intensity modulated radiation therapy. Progress. Med. Phys. 24(4):213-219 (2014) https://doi.org/10.14316/pmp.2013.24.4.213
  13. Basran PS, Woo MK: An analysis of tolerance levels in IMRT quality assurance procedures. Med. Phys. 35(6):2300-2307 (2008) https://doi.org/10.1118/1.2919075
  14. Gordon JD, Krafft SP, Jang S, Smith-Raymond L, Stevie MY, Hamilton RJ: Confidence limit variation for a single IMRT system following the TG119 protocol. Med. Phys. 38(3): 1641-1648 (2011) https://doi.org/10.1118/1.3555298
  15. Sanghangthum T, Suriyapee S, Srisatit S, Pawlicki T: Statistical process control analysis for patient-specific IMRT and VMAT QA. J. Radiat. Res. 54(3):546-552 (2013) https://doi.org/10.1093/jrr/rrs112
  16. Palaniswaamy G, Scott Brame R, Yaddanapudi S, Rangaraj D, Mutic S: A statistical approach to IMRT patient-specific QA. Med. Phys. 39(12):7560-7570 (2012) https://doi.org/10.1118/1.4768161
  17. Gagneur JD, Ezzell GA: An improvement in IMRT QA results and beam matching in linacs using statistical process control. J. Appl. Clin. Med. Phys. 15(5):4927 (2014)
  18. Pawlicki T, Yoo S, Court LE, et al.: Moving from IMRT QA measurements toward independent computer calculations using control charts. Radiother. Oncol. 89(3):330-337 (2008) https://doi.org/10.1016/j.radonc.2008.07.002
  19. Cheong KH, Lee MY, Kang SK, et al.: Statistical quality control for volumetric modulated arc therapy (VMAT) delivery by using the machine's log data. J. Kor. Phys. Soc. (Article in press, 2015)
  20. Rah JE, Shin D, Oh DH, Kim TH, Kim GY: Feasibility study of using statistical process control to customized quality assurance in proton therapy. Med. Phys. 41(9):092105 (2014) https://doi.org/10.1118/1.4893916
  21. Pawlicki T, Whitaker M, Boyer AL: Statistical process control for radiotherapy quality assurance. Med. Phys. 32(9): 2777-2786 (2005) https://doi.org/10.1118/1.2001209
  22. http://Cran.r-project.org/index.html
  23. http://www.hanyang.ac.kr/english/ezspc.html

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