Commissioning of a Geant4 based treatment plan simulation tool : linac model and dicom-rt interface
Cornelius, Iwan, Poole, Christopher, Langton, Christian M., Hill, Brendan, Middlebrook, Nigel, & Oborn, Brad (2011) Commissioning of a Geant4 based treatment plan simulation tool : linac model and dicom-rt interface. .
A Geant4 based simulation tool has been developed to perform Monte Carlo modelling of a 6 MV VarianTM iX clinac. The computer aided design interface of Geant4 was used to accurately model the LINAC components, including the Millenium multi-leaf collimators (MLCs). The simulation tool was verified via simulation of standard commissioning dosimetry data acquired with an ionisation chamber in a water phantom. Verification of the MLC model was achieved by simulation of leaf leakage measurements performed using GafchromicTM film in a solid water phantom. An absolute dose calibration capability was added by including a virtual monitor chamber into the simulation. Furthermore, a DICOM-RT interface was integrated with the application to allow the simulation of treatment plans in radiotherapy. The ability of the simulation tool to accurately model leaf movements and doses at each control point was verified by simulation of a widely used intensity-modulated radiation therapy (IMRT) quality assurance (QA) technique, the chair test.
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|Item Type:||Journal Article|
|Keywords:||geant4, radiotherapy, chair test, quality assurance, imrt, monte carlo, rapidarc|
|Subjects:||Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OTHER PHYSICAL SCIENCES (029900) > Medical Physics (029903)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
Current > Institutes > Institute of Health and Biomedical Innovation
Past > Schools > Physics
|Copyright Owner:||Copyright 2011 The Authors|
|Deposited On:||05 May 2011 09:18|
|Last Modified:||11 Aug 2011 22:54|
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