KVCT, MVCT, and hybrid CT image studies--treatment planning and dose delivery equivalence on helical tomotherapy

Medical Physics
Spencer Martin, Slav Yartsev

Abstract

To determine the equivalence of radiation therapy treatment planning and delivery for various imaging options on helical tomotherapy. Seven treatment plans using identical anatomy and planning parameters were created based on the following CT studies: Standard kilovoltage CT (kVCT); 2, 4, and 6 mm spacing megavoltage CT (MVCT); and 2, 4, and 6 mm hybrid MVCT/kVCT studies. In addition, two kVCT based plans were created to explore the effect of the choice of dose calculation grid for optimization. Calculated and measured dose distributions were compared via volumetric and dosimetric analysis at the planning stage, point dose measurements with ion chamber, along with EDR2 film data for gamma function analysis for distance to agreement of 3 mm and dose differences of 3%, 5%, and 7% using both the commercially available "cheese" phantom and the new QUASAR Verification (QVer) phantom. Plans created for each imaging option showed residual error increasing as image slice spacing increased and critical structure size decreased. With the exception of the low dose area in hybrid studies, point dose measurements were within the calculated/measured dose acceptance criteria of 5% on both the QVer and cheese phantoms. Gamma analysis for the o...Continue Reading

References

Jun 3, 1998·Medical Physics·D A LowJ A Purdy
Oct 26, 1999·Physics in Medicine and Biology·K J RuchalaT R Mackie
Oct 8, 2003·Medical Physics·Daniel A Low, James F Dempsey
Mar 6, 2004·Medical Physics·Robert JerajPaul Reckwerdt
Jun 30, 2005·Medical Physics·M W KissickE T Soisson
Jun 23, 2006·Physics in Medicine and Biology·T R Mackie
Jan 2, 2007·International Journal of Radiation Oncology, Biology, Physics·Omar A ZeidanPatrick A Kupelian
Apr 4, 2007·Physics in Medicine and Biology·Curtis WoodfordJake Van Dyk
Jul 20, 2007·Physics in Medicine and Biology·Curtis WoodfordJake Van Dyk
Sep 26, 2007·International Journal of Radiation Oncology, Biology, Physics·Patrick A KupelianSanford L Meeks
Oct 31, 2007·International Journal of Radiation Oncology, Biology, Physics·Curtis WoodfordJake Van Dyk
Mar 11, 2008·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Miller MacPhersonRajiv Samant
May 22, 2008·Medical Physics·Steven R MoecklyHoward R Elson
Dec 3, 2008·Technology in Cancer Research & Treatment·M SchirmJ Van Dyk
Mar 24, 2009·Physics in Medicine and Biology·Summer R ChaudhariDaniel Low
Apr 28, 2009·International Journal of Radiation Oncology, Biology, Physics·David C WesterlyThomas R Mackie
Aug 4, 2009·Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists·James RenaudJake Van Dyk
Jan 1, 2007·Biomedical Imaging and Intervention Journal·S YartsevJ Van Dyk

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Citations

Dec 23, 2011·Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists·Ju-Young Song, Sung-Ja Ahn
Nov 10, 2015·Reports of Practical Oncology and Radiotherapy : Journal of Greatpoland Cancer Center in Poznań and Polish Society of Radiation Oncology·Weronika JackowiakMałgorzata Paszek-Widzińska

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