Aplicação do Operador OWA nos Problemas da Otimização de Ângulo de Feixe e da Intensidade em IMRT

  • Sidemar F. Cezario UFRRN
  • Elizabeth F. G. Goldbarg UFRRN
  • Sílvia M. D. M. Maia UFRRN
DOI: https://doi.org/10.5753/sbcas.2020.11558

Abstract


Radiation therapy is an extremely important method for cancer treatment. The main challenge is to deliver, at least, the prescribed dose to the tumor, while avoiding to expose healthy organs to radiation beyond defined limits. The intensity modulated teletherapy (IMRT) is an advanced mode of high-precision radiotherapy. The main difficulty of IMRT treatments consists in automating the selection of beam angles for an adequate dose distribution. This research presents an algorithm that seeks the ideal balance between a set of angles and a dose distribution that respects medical prescriptions inherent to the treatment. The proposed algorithm uses two new mathematical models and the Ordered Weighted Average (OWA) operator as a criterion of preference to choose the best solution.

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Published
2020-09-15
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CEZARIO, Sidemar F.; GOLDBARG, Elizabeth F. G.; MAIA, Sílvia M. D. M.. Aplicação do Operador OWA nos Problemas da Otimização de Ângulo de Feixe e da Intensidade em IMRT. In: THESIS AND DISSERTATION CONTEST - BRAZILIAN SYMPOSIUM ON COMPUTING APPLIED TO HEALTHCARE (SBCAS), 20. , 2020, Evento Online. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2020 . p. 56-61. ISSN 2763-8987. DOI: https://doi.org/10.5753/sbcas.2020.11558.