NDLI: Geant4 Simulation of an Accelerator Head for Intensity Modulated Radiotherapy

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Geant4 Simulation of an Accelerator Head for Intensity Modulated Radiotherapy

Content Provider	Semantic Scholar
Author	Foppiano, F. Benzi, Largo Rosanna Mascialino, Barbara Pia, Maria Grazia Piergentili, Michela
Copyright Year	2005
Abstract	We present a Geant4-based application for the simulation of the absorbed dose distribution given by a medical linac used for intensity modulated radiation therapy (IMRT). The linac geometry is accurately described in Monte Carlo code using the accelerator’s manifacturer’s specifications. The flexible design of this object-oriented system allows for an easy configuration of the geometry of the treatment head for various types of medical accelerators used in clinical practice. The precision of the software system relies on the application of Geant4 Low Energy Electromagnetic models, extending the treatment of electron and photon interaction down to low energies for precise dosimetry. The capability of the software to evaluate dose distribution has been verified by comparison with measurements in water phantom; the comparisons were performed for percent depth dose (PDD) and for flatness at 15, 50 and 100 mm depth for various field size, for a 6 MV electron beam. The source-surface distance (SSD) was 100 cm. We show the comparisons between simulation results and experimental measurements. The code is fully parallelized, allowing to achieve the high statistics Monte Carlo production required fastly. The parallelization scheme adopted allows to run the code trasparently either in a local computing farm or with geografically distributed resources, such as a computing GRID. This software system is released to the public as an open source software system, for the benefit of the scientific community.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.ge.infn.it/geant4/papers/2005/mc2005/imrt.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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