Comparação experimental entre Filme radiocrômico e Diodo Edge no comissionamento de cones para Radiocirurgia

Autores

  • Thiago Schmeling Fontana UFPE
  • Comparação experimental entre Filme radiocrômico e Diodo Edge no comissionamento de cones para Radiocirurgia UFPE , UFPE
  • Lucas Delbem Albino UFPE , UFPE
  • Ernesto Henrique Roesler RHP , RHP
  • Fernando dos Santos UFPE, RHP ,
  • Viviane Khoury UFPE ,
  • Helen Khoury UFPE ,

DOI:

https://doi.org/10.15392/bjrs.v10i2A.2025

Palavras-chave:

radiocirurgia, comissionamento, cones ciculares, filme radiocromico, diodo

Resumo

Stereotactic Radiosurgery (SRS) is a procedure that uses ionizing radiation in a single fraction or few fractions to treat intracranial lesions. Usually, for these treatments, small photon fields, formed by circular collimators or micro multileaf collimators are used. The objective of the present work is to compare the measurements of the dose in depth (PDD), the off-axis ratio (OAR), and the output factor (OF) using Edge diode and radiochromic films and analyzing the agreement between the two detectors during these measures. In the gamma index analysis of the profiles, the minimum percentage reached was 98.3% of the points in the criterion 1% and 0.5 mm. The maximum percentage difference in the output factor was 2.79% for a cone 4 mm and 10FFF. In the gamma index analysis of the PDDs, the minimum percentage reached was 97% of the points in the criterion 1% and 1mm. The results show a good agreement between the edge detector and the film in small field measurements for radiosurgery.

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Referências

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Publicado

21-07-2022

Como Citar

Comparação experimental entre Filme radiocrômico e Diodo Edge no comissionamento de cones para Radiocirurgia . Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 10, n. 2A (Suppl.), 2022. DOI: 10.15392/bjrs.v10i2A.2025. Disponível em: https://bjrs.org.br/revista/index.php/REVISTA/article/view/2025. Acesso em: 16 jul. 2025.