Gynecological brachytherapy for postoperative endometrial cancer: dosimetric analysis (Ir-192 vs Co-60)

• V. Tormo Ferrero ^[1] ; R. Duque Ugarte ^[1] ; M. Á. Berenguer Francés ^[1] ; R. Cardenal Maciá ^[1]
  1. [1] Hospital Universitari Sant Joan d´Alacant, España
• Localización: Clinical & translational oncology, ISSN 1699-048X, Vol. 19, Nº. 11 (November 2017), 2017, págs. 1409-1413
• Idioma: inglés
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• Resumen

  • Introduction Endovaginal brachytherapy treatment dosimetry differences were studied using Ir-192 or Co-60 sources for postoperative endometrial cancer.

    Materials and methods A prospective descriptive study was conducted. Thirty-six dosimetry plans of different patients were studied (15 by Ir-192 and 21 by Co-60). Variables studied included D2cc Rectum, D2cc Bladder, D2cc Sigmoid, dose percentage at point 0 (applicator surface on the top of the cylinder) and dose percentage at point 1 (5 mm deep on the top of the cylinder). A comparative analysis was performed of the values obtained from each variable between Ir-192 and Co-60 treatments. We compared average of each variables between Iridium and Cobalt by T Student for independent samples (SPSS 22).

    Results There were no significant differences on using Ir-192 or Co-60 by variables, except for dose percentage at point 1 in which we detected significant differences (Table 1).

    Discussion Brachytherapy treatment dosimetry plans are similar using Ir-192 or Co-60, except dose percentage at point 1. In the scientific literature, some differences exist and there are some advantages in using cobalt.