Quality assurance for the geometric accuracy of cone-beam CT guidance in radiation therapy

International Journal of Radiation Oncology, Biology, Physics
Jean-Pierre BissonnetteDavid A Jaffray

Abstract

The introduction of volumetric X-ray image-guided radiotherapy systems allows improved management of geometric variations in patient setup and internal organ motion. As these systems become a routine clinical modality, we propose a daily quality assurance (QA) program for cone-beam computed tomography (CBCT) integrated with a linear accelerator. The image-guided system used in this work combines a linear accelerator with conventional X-ray tube and an amorphous silicon flat-panel detector mounted orthogonally from the accelerator central beam axis. This article focuses on daily QA protocols germane to geometric accuracy of the CBCT systems and proposes tolerance levels on the basis of more than 3 years of experience with seven CBCT systems used in our clinic. Monthly geometric calibration tests demonstrate the long-term stability of the flex movements, which are reproducible within +/-0.5 mm (95% confidence interval). The daily QA procedure demonstrates that, for rigid phantoms, the accuracy of the image-guided process can be within 1 mm on average, with a 99% confidence interval of +/-2 mm.

References

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Citations

Sep 6, 2012·Australasian Physical & Engineering Sciences in Medicine·Shamurailatpam Dayananda SharmaMalhotra Heigrujam
Jun 20, 2008·Medical Physics·Jean-Pierre BissonnetteDavid A Jaffray
Dec 12, 2012·PloS One·Jui-Ting HsuShun-Ping Wang
Feb 11, 2010·Nihon Hoshasen Gijutsu Gakkai zasshi·Yoichi Watanabe
Jan 7, 2014·Cancer radiothérapie : journal de la Société française de radiothérapie oncologique·F WerléD Atlani
Mar 14, 2014·Practical Radiation Oncology·Matthew W SuttonKenneth R Hogstrom
May 29, 2012·Cancer radiothérapie : journal de la Société française de radiothérapie oncologique·E CassolC Alapetite
Jun 15, 2011·International Journal of Radiation Oncology, Biology, Physics·Max DaheleSuresh Senan
Jul 22, 2010·International Journal of Radiation Oncology, Biology, Physics·Lee-Cheng PengChihray Liu
Dec 20, 2008·International Journal of Radiation Oncology, Biology, Physics·Jean-Pierre BissonnetteAndrea Bezjak
Apr 14, 2016·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Nevin McVicarEmily Heath
Oct 1, 2010·Medical Physics·Stanley H BenedictFang-Fang Yin
Dec 18, 2013·International Journal of Radiation Oncology, Biology, Physics·Aurora FassiGuido Baroni
Sep 8, 2012·Journal of Applied Clinical Medical Physics·Stephen F KryNathan L Childress
May 16, 2012·Journal of Applied Clinical Medical Physics·Jinkoo KimSamuel Ryu
Jun 24, 2015·Journal of Applied Clinical Medical Physics·Dennis N StanleyAlonso N Gutierrez
Nov 18, 2009·Journal of Applied Clinical Medical Physics·Huaiqun GuanFang-Fang Yin
Mar 24, 2017·Journal of Applied Clinical Medical Physics·Michael P Barnes, Peter B Greer
Apr 23, 2017·Medical Physics·Sridhar YaddanapudiS Murty Goddu
Mar 10, 2018·Journal of Applied Clinical Medical Physics·Dennis N StanleyAlonso N Gutiérrez
Oct 24, 2012·Nihon Hoshasen Gijutsu Gakkai zasshi·Daisaku TatsumiMasako Hosono
Nov 2, 2019·The British Journal of Radiology·Ricardo LlorenteEric A Mellon
May 28, 2019·Medical Physics·Bijan ArjomandyYuki Kase
Sep 5, 2018·Journal of Applied Clinical Medical Physics·Michael P BarnesPeter B Greer
Jul 29, 2015·Journal of Applied Clinical Medical Physics·Tsuicheng D ChiuWeihua Mao
May 24, 2018·Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]·Manuel BlessingAnna Simeonova-Chergou
Sep 27, 2020·Journal of Medical Radiation Sciences·Crispen ChamunyongaJulie Burbery
Jan 16, 2021·Journal of Applied Clinical Medical Physics·Arthur J Olch, Parham Alaei

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