ILCA MARLI MOITINHO AMARAL

ILCA MARLI MOITINHO AMARAL

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Using a Monte Carlo simulation to analyze the ideal activity for a phosphorus-32 polymeric brachytherapy source for paraspinal tumors
2024 - EL HAJJ, LARA; BURIN, ANA L.; TALACIMON, CRISTHIAN F.; MEDEIROS, ILCA M.M.A.; RIGO, MARIA E.Z.; TAVARES, PAULO V. dos S.; RODRIGUES, PRISCILA S.; NOGUEIRA, THUANY C.; ROSERO, WILMMER A.A.; RODRIGUES JUNIOR, ORLANDO; VIEIRA, JOSE M.; ZEITUNI, CARLOS A.; ROSTELATO, MARIA E.C.M.
A promising radioactive source for use in intracavitary brachytherapy is phosphorus-32. This source has been prominent as a minimally invasive treatment for craniopharyngiomas and in the treatment of metastatic bone diseases in general and has been developed at Nuclear and Energy Research Institute (IPEN). In this work, a Monte Carlo simulation was used to evaluate the ideal activity this source must have to deliver a 1 Gy/min dose rate. TOPAS was used to model the simulation, and its geometry was simulated with the source centered in the origin point, inserted into an isotropic volume of water of 17.42 cm3. The source has the decay properties of phosphorus-32. The total dose was calculated using volumetric scorers. The results were promising, showing that the initial activity must be 86.14 mCi or 2871 MBq to obtain the 1 Gy/min dose rate. With the initial activity measured in this work, it is possible to minimize the patient's exposure to radiation, while ensuring the quality of the treatment.
Investigation for Monte Carlo simulation with geometric simplification of the GammaCell 220 irradiator with experimental measurements using Fricke xylenol gel (FXG)
2024 - RODRIGUES, P.S.; BURIN, A.L.; TALACIMON, C.F.; MEDEIROS, I.M.M.A.; PEREIRA, J.J.N.; TEODORO, L.E.H.; RIGO, M.E.Z.; GESSERAME, M.M.F.; TAVARES, P.V.S.; MARTINS, A.C.; SOUZA, C.D.; ZEITUNI, C.A.; RODRIGUES JUNIOR, O.; ROSTELATO, M.E.C.M.
Radiation therapy necessitates dosimetry using materials with densities similar to human tissue and at a lower cost. Comparisons with simulation methods will help validate new dosimeters and their measurements. To experimentally simulate radiation effects, an industrial irradiator like the GammaCell 220 can be utilized. This study aims to validate FXG dosimetry through Monte Carlo simulations using the MCNP and TOPAS codes, employing a simplified geometry model of the GammaCell 220 irradiator. The FXG dosimeter demonstrated linearity with an R2 of 0.99517. Monte Carlo simulations using both codes showed coherence, with MCNP exhibiting greater similarity to experimental results. The incorporation of simplified Monte Carlo modeling demonstrates the feasibility of obtaining satisfactory results for the GammaCell 220 irradiator geometry. Additionally, it validates the applicability of FXG dosimetry for future utilization in radiation therapy.
Study of dose calculation of beta-emitting source for palliative treatment of spinal cancer using MCNP6.2 code
2024 - BURIN, A.L.; KOKA, A.; TALACIMON, C.; MEDEIROS, I.; TEODORO, L.; RODRIGUES, P.; TAVARES, P.; SPIGAROLI, S.; DARUICH, C.; ROSTELATO, M.
Dosimetric analysis of iodine-125 seeds using the Fricke xylenol gel dosimeter
2024 - TALACIMON, C.; RODRIGUES, P.; TAVARES, P.; TEODORO, L.; BURIN, A.; MEDEIROS, I.; RIGO, M.; KOKA, A.; RODRIGUES, O.; ROSTELATO, M.
Possible new phosphorus-32 source for paraspinal brachytherapy
2024 - TEODORO, L.; BURIN, A.; KOKA, A.; TALACIMON, C.; RIGO, M.; MEDEIROS, I.; RODRIGUES, P.; TAVARES, P.; SGRIGNOLI, S.; ROSTELATO, M.
Estimation of dose deposition by 198-AuNPs in the prostate with MCNP in simplified geometry
2024 - SGRIGNOLI, S.S.; ANGELOCCI, L.V.; CHICO, H.S.; SOUZA, C.D.; BURIN, A.L.; RODRIGUES, P.S.; TEODORO, L.E.H.; MEDEIROS, I.M.M.; ZEITUNI, C.A.; ROSTELATO, M.E.C.M.
Monte Carlo method applied to nanobrachytherapy simulations
2024 - KOKA, A.; MEDEIROS, I.; BURIN, A.; TALACIMON, C.; ROSA, G.; TEODORO, L.; RODRIGUES, P.; SGRIGNOLI, S.; ROSTELATO, M.; ZEITUNI, C.
Determination of the activity of iodine-125 by the sum peak method for application in brachytherapy
2024 - MEDEIROS, I.; KOKA, A.; BURIN, A.; TALACIMON, C.; ROSA, G.; MOURA, J.; TEODORO, L.; RIGO, M.; RODRIGUES, P.; SGRIGNOLI, S.; ROSTELATO, M.; ZEITUNI, C.
Using a Monte Carlo simulation to analyze the ideal activity for a phosphorus-32 polymeric brachytherapy source for paraspinal tumors
2023 - TEODORO, LARA E.H.; BURIN, ANA L.; TALACIMON, CRISTHIAN F.; MEDEIROS, ILCA M.M.A.; RIGO, MARIA E.Z.; TAVARES, PAULO V. dos S.; RODRIGUES, PRISCILA S.; NOGUEIRA, THUANY C.; ROSERO, WILMMER A.A.; RODRIGUES JUNIOR, ORLANDO; VIEIRA, JOSE M.; ZEITUNI, CARLOS A.; ROSTELATO, MARIA E.C.M.
Investigating a dopant for mitigating the natural degradation of Fricke Xylenol Gel dosimeters
2023 - TALACIMON, CRISTHIAN; ILCA, MEDEIROS; TEODORO, LARA; RIGO, MARIA; GESSERAME, MAYSA; TAVARES, PAULO; RODRIGUES, PRISCILA; NOGUEIRA, THUANY; ROSERO, WILMMER; RODRIGUES JUNIOR, ORLANDO; ZEITUNI, CARLOS; ROSTELATO, MARIA