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Simulation and experimental verificationof dosedistributions of electron beams

Published online by Cambridge University Press:  21 March 2012

J. Šemnická  and
J. Klusoň
J. Šemnická
Affiliation:
Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Brehova 7, Prague 1, 115 19, Czech Republic Na Homolce Hospital, Medical Physics Department, Roentgenova 37/2, Prague 5, 150 00, Czech Republic
J. Klusoň
Affiliation:
Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Brehova 7, Prague 1, 115 19, Czech Republic
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Abstract

Accurate dose calculations are very important in radiotherapytreatment planning. The Monte Carlo method has proven to be an accurateand reliable method for simulation of the dose distributions fromelectron beams and can provide theoretically more accurate distributionsthan conventional planning system algorithms (e.g. theGeneralized Gaussian Pencil Beam algorithm) for more complex targetconfigurations. The aim of this work was to assess the parametersand spectrum of a given electron beam (Varian CLINAC 2100 C/D) from experimentaldepth dose distribution and then simulate dose distributions inan experimental arrangement with a 3D polymer gel dosimeter. Thecomparison of data from experimental measurements, Monte Carlo calculationsand the planning system enabled us to verify experimentally thesimulation model and technique as well as the planning system results. Bothsimple and more complex systems (e.g. dose distributions closeto different material interfaces) can be studied. The generationand influence of the “bremsstrahlung” photons in the electron beamswas also analyzed using the simulation technique. The computations,experimental methods used and results obtained are presented anddiscussed.

Keywords

Monte Carlo simulationelectron beams3D gel dosimetrytreatment planning systems
Type
Research Article
Information
Radioprotection , Volume 47 , Issue 1 , January 2012 , pp. 79 - 91
Copyright
© EDP Sciences, 2012

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