Quantification and comparison the dosimetric impact of two treatment couch model in VMAT

Journal of Applied Clinical Medical Physics
Ruohui ZhangWenwen Bai

Abstract

The use of Monte Carlo treatment planning systems (TPS) in radiation therapy has increased the dosimetric accuracy of VMAT treatment sequences. However, this accuracy is compromised by not including the treatment couch into the treatment planning process. Therefore, the impact of the treatment couch on radiation delivery output was determined, and two different couch models (uniform couch model A vs two components model B) were included and tested in the Monaco TPS to investigate which model can better quantify the couch influence on radiation dose. Relative attenuation measurements were performed following procedures outlined by TG-176 with three phantom positions for A-B direction: on the left half (L), in the center (C) and on the right half (R) of the couch. As well as absolute dose comparison of static fields of 10 × 10 cm2 that were delivered through the couch tops with that calculated in the TPS with the couch model at 2 mm and 5 mm computing grid size respectively. The most severe percentage deviation was 4.60% for the phantom positioned at the left half of the couch with 5 mm grid size at gantry angle 120°. The couch model was included in the TPS with a uniform ED of 0.26 g/cm3 or a two component model with a fiber 0.5...Continue Reading

References

Oct 1, 1991·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·L G de Mooy
Jan 13, 1998·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·B De OstD Van den Weyngaert
Jun 12, 1998·Physics in Medicine and Biology·S J Meara, K A Langmack
Jul 6, 2001·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·J VenselaarB Mijnheer
May 30, 2007·Journal of Applied Clinical Medical Physics·W Kenji MyintLee H Gerig
Jul 2, 2010·Journal of Applied Clinical Medical Physics·Monique Van ProoijenRobert K Heaton
Sep 14, 2010·Medical Physics·David W SmithAndrew Morgan
Aug 17, 2011·Journal of Applied Clinical Medical Physics·Heng LiRajat J Kudchadker
Nov 8, 2011·Physics in Medicine and Biology·Kiley B PulliamStephen F Kry
Nov 19, 2011·Physics in Medicine and Biology·T TekeI A Popescu
Sep 8, 2015·Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists·William Neil DuggarClaus C Yang
May 4, 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)·Alessandro SaviniGiovanni Orlandi
Jun 12, 2016·Radiation Oncology·Petra M HärtlBarbara Dobler
Feb 28, 2017·Scientific Reports·Chun-Yen YuShih-Ming Hsu

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Software Mentioned

Elekta iBEAM Couchtop
Elekta
Couchtop
Monaco
iBEAM
Monaco TPS

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