Modeling Elekta VersaHD using the Varian Eclipse treatment planning system for photon beams: A single-institution experience.

Modeling Elekta VersaHD using the Varian Eclipse treatment planning system for photon beams: A single-institution experience. J Appl Clin Med Phys. 2019 Aug 30;: Authors: Zhang Y, Le AH, Tian Z, Iqbal Z, Chiu T, Gu X, Pugachev A, Reynolds R, Park YK, Lin MH, Stojadinovic S Abstract The aim of this study was to report a single-institution experience and commissioning data for Elekta VersaHD linear accelerators (LINACs) for photon beams in the Eclipse treatment planning system (TPS). Two VersaHD LINACs equipped with 160-leaf collimators were commissioned. For each energy, the percent-depth-dose (PDD) curves, beam profiles, output factors, leaf transmission factors and dosimetric leaf gaps (DLGs) were acquired in accordance with the AAPM task group reports No. 45 and No. 106 and the vendor-supplied documents. The measured data were imported into Eclipse TPS to build a VersaHD beam model. The model was validated by creating treatment plans spanning over the full-spectrum of treatment sites and techniques used in our clinic. The quality assurance measurements were performed using MatriXX, ionization chamber, and radiochromic film. The DLG values were iteratively adjusted to optimize the agreement between planned and measured doses. Mobius, an independent LINAC logfile-based quality assurance tool, was also commissioned both for routine intensity-modulated radiation therapy (IMRT) QA and as a secondary check for the Eclipse VersaHD model. The Eclipse-generated...
Source: Journal of Applied Clinical Medical Physics - Category: Physics Authors: Tags: J Appl Clin Med Phys Source Type: research

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Publication date: January 2020Source: Radiation Physics and Chemistry, Volume 166Author(s): Fang-Yu Liu, Zhi-Wei Dong, Hui-Bin Yang, Hong-Yun ShiAbstractEven with advanced inverse intensity modulated radiation therapy (IMRT) technique, the optimization of treatment plans remains a time-consuming task and the outcome is highly influenced by the experience of the planner and time pressure. Automated treatment planning is a current hot topic and new frontier in radiotherapy, which is expected to minimize the above problems. The quality and efficacy of the IMRT plans generated by the Auto-Planning module of the Pinnacle3 treat...
Source: Radiation Physics and Chemistry - Category: Physics Source Type: research
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Source: Journal of Applied Clinical Medical Physics - Category: Physics Authors: Tags: J Appl Clin Med Phys Source Type: research
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