한국의학물리학회지:의학물리 (Progress in Medical Physics)

  • 제25권4호
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  • Pages.281-287
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  • 2014
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  • 2508-4445(pISSN)
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  • 2508-4453(eISSN)
한국의학물리학회 (Korean Society of Medical Physics)
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EPID를 이용한 정위적방사선수술의 중심점 검사에 대한 연구

Isocenter Check and QA of Tactic Radiosurgery Devices Using EPID

  • 신교철 (단국대학교병원 방사선종양학과) ;
  • 최상규 (단국대학교병원 방사선종양학과) ;
  • 김정기 (동남권원자력의학원 연구센터) ;
  • 정동혁 (동남권원자력의학원 연구센터)
  • Shin, Kyo Chul (Department of Radiation Oncology, Dankook University Hospital) ;
  • Choi, Sang Gyu (Department of Radiation Oncology, Dankook University Hospital) ;
  • Kim, Jung Kee (Research Center, Dongnam Institute of Radiological and Medical Sciences) ;
  • Jeong, Dong Hyeok (Research Center, Dongnam Institute of Radiological and Medical Sciences)
  • 투고 : 2014.12.05
  • 심사 : 2014.12.20
  • 발행 : 2014.12.30
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초록

본 연구에서는 선형가속기를 이용한 정위적방사선수술의 시행에 있어서 필수적인 품질관리의 하나로서 Winston Lutz 시험을 상용의 전자포털영상장치를 이용하여 수행하였다. 전형적으로 이용되는 필름 분석 방법을 추가로 시행하여 EPID 방법의 장점을 평가하였다. EPID 방법으로 결정한 등중심 오차는 필름 방법으로 구한 값과 최대 0.32 mm 이내로 일치하는 것으로 나타났다. EPID를 이용한 Winston Lutz 시험은 시간의 절약 측면과 측정시의 개인 오차를 방지하는 측면에서 매우 실용적인 방법이라고 생각된다.

The Winston Lutz test, which checks the accuracy of the isocenter for stereotactic radiosurgery (SRS), was performed with the commercial electronic portal imaging device (EPID). The usual Winston Lutz test with film was also performed for comparison with the test with EPID. The maximum difference in isocenter between the two methods was 0.32 mm. The Winston Lutz test using EPID is practical as it can reduce time and avoid human errors compared to the test with film.

키워드

참고문헌

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