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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 1,742 - 1,748 (7page)
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초록· 키워드
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The purpose of this study was to compare the performance of different commercial quality assurance (QA) systems for the pretreatment verification plan of stereotactic body radiotherapy (SBRT) with volumetric arc therapy (VMAT) technique using a flattening-filter-free beam. The verification for 20 pretreatment cancer patients (seven lung, six spine, and seven prostate cancers) were tested using three QA systems (EBT3 film, I’mRT MatriXX array, and MapCHECK). All the SBRT-VMAT plans were optimized in the Eclipse (version 11.0.34) treatment planning system (TPS) using the Acuros XB dose calculation algorithm and were delivered to the Varian TrueBeam® accelerator equipped with a high-definition multileaf collimator. Gamma agreement evaluation was analyzed with the criteria of 2% dose difference and 2 mm distance to agreement (2%/2 mm) or 3%/3 mm. The highest passing rate (99.1% for 3%/3 mm) was observed on the MapCHECK system while the lowest passing rate was obtained on the film. The pretreatment verification results depend on the QA systems, treatment sites, and delivery beam energies. However, the delivery QA results for all QA systems based on the TPS calculation showed a good agreement of more than 90% for both the criteria. It is concluded that the three 2D QA systems have sufficient potential for pretreatment verification of the SBRT-VMAT plan.
목차
등록된 정보가 없습니다.
참고문헌 (31)
참고문헌 신청
Vieillevigne L / 2015 / Gamma index comparison of three VMAT QA systems and evaluation of their sensitivity to delivery errors / Phys Med 31:720~725
Thomas SD / 2005 / Patient specific treatment verifications for helical tomotherapy treatment plans / Med Phys 32:3793~3800
Ezzell GA / 2003 / Guidance document on delivery, treatment planning, and clinical implementation of IMRT: report of the IMRT Subcommittee of the AAPM Radiation Therapy Committee / Med Phys 30:2089~2115
김연래 / 2014 / Comparison of the Performance between Portal Dosimetry and a Commercial Two-dimensional Array System on Pretreatment Quality Assurance for Volumetric-modulated Arc and Intensity-modulated Radiation Therapy / Journal of the Korean Physical Society 64(8):1202~1206
김태호 / 2011 / 2D 어레이 다이오드 검출기를 통한 IMRT 계산선량의 정확성 평가 및 효용성 연구 / 의학물리 22(2):61~66
Thomas SD / 2005 / Patient specific treatment verifications for helical tomotherapy treatment plans / Med Phys 32:3793~3800
Ezzell GA / 2003 / Guidance document on delivery, treatment planning, and clinical implementation of IMRT: report of the IMRT Subcommittee of the AAPM Radiation Therapy Committee / Med Phys 30:2089~2115
김연래 / 2014 / Comparison of the Performance between Portal Dosimetry and a Commercial Two-dimensional Array System on Pretreatment Quality Assurance for Volumetric-modulated Arc and Intensity-modulated Radiation Therapy / Journal of the Korean Physical Society 64(8):1202~1206
김태호 / 2011 / 2D 어레이 다이오드 검출기를 통한 IMRT 계산선량의 정확성 평가 및 효용성 연구 / 의학물리 22(2):61~66
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