Quality control of radiotherapy treatment plans with electrons

Luciana Tourinho Campos; Luiz Ribeiro da Rosa; Delano Valdivino Batista; Delson Braz

doi:10.15392/bjrs.v7i1.785

Authors

Luciana Tourinho Campos Universidade do Estado do Rio Janeiro
Luiz Ribeiro da Rosa Instituto de Radioproteção e Dosimetria – IRD/CNEN, Rio de Janeiro- RJ, Brazil
Delano Valdivino Batista Instituto de Radioproteção e Dosimetria – IRD/CNEN, Rio de Janeiro- RJ, Brazil
Delson Braz laboratório de Instrumentação Nuclear – COPPE/UFRJ, Rio de Janeiro- RJ, Brazil

DOI:

https://doi.org/10.15392/bjrs.v7i1.785

Keywords:

radiotherapy, Monte Carlo dosimetry, EGSnrc.

Abstract

In this work the quality of the treatment planning generated by EclipseÒ commercial treatment planning system for electron beams of energy 9 and 20 MeV was verified and their accuracy in the calculation of dose distributions for several clinical situations was evaluated. Tests cases had been developed according to the Brazilian reality, having as reference the radiotherapy treatments carried out in the National Institute of the Cancer.The system developed for checking the quality of treatment planning systems with electrons was efficient in evaluating the Eclipse planning system by identifying the failures of their algorithms, especially in planning the isodose. The verification system has been validated against the Monte Carlo method and the experimental data with an ionization chamber and showed the shortcomings of generalized pencil beam and eMC algorithms.

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Author Biographies

Luciana Tourinho Campos, Universidade do Estado do Rio Janeiro

Departamento de Física Aplicada e Termodinâmica – DFAT/UERJ, Rio de Janeiro- RJ, Brazil

Luiz Ribeiro da Rosa, Instituto de Radioproteção e Dosimetria – IRD/CNEN, Rio de Janeiro- RJ, Brazil

Fisica Medica

Delano Valdivino Batista, Instituto de Radioproteção e Dosimetria – IRD/CNEN, Rio de Janeiro- RJ, Brazil

Fisica Medica

Delson Braz, laboratório de Instrumentação Nuclear – COPPE/UFRJ, Rio de Janeiro- RJ, Brazil

Programa de Energia Nuclear

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