JOÃO AUGUSTO MOURA

JOÃO AUGUSTO MOURA

(Fonte: Lattes)

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Possui graduação em Tecnologia em saúde pela Faculdade de Tecnologia de Sorocaba (2005). Mestrado em Tecnologia Nuclear pela Universidade de São Paulo (2009). Doutorado em Tecnologia Nuclear pela Universidade de São Paulo (2015). Tem experiência na área de Tecnologia Nuclear, com ênfase em produção de fontes para radioterapia. Atualmente trabalha em pesquisa e desenvolvimento no Instituto de Pesquisas Energéticas e Nucleares (IPEN/CNEN-SP). (Texto extraído do Currículo Lattes em 8 maio 2023)

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A study about the measurement method of the homogeneity of radioactivity along an iridium-192 wire used in brachytherapy
2014 - COSTA, OSVALDO L.; CALVO, WILSON A.P.; ZEITUNI, CARLOS A.; ROSTELATO, MARIA E.C.M.; MOURA, JOAO A.; FEHER, ANSELMO; SOUZA, CARLA D.; SOMESSARI, SAMIR L.
The Nuclear and Energy Research Institute has produced, since 1998, iridium-192 wires used in low dose rate brachytherapy. In the paper the authors studied the influence of wire profile on the homogeneity distribution of radioactivity of iridium-192 along the wire. The authors propose the improvements in the quality control procedure that will provide more accurate measurement data and suggest changes in control devices.
Development and production of radioactive sources used for cancer treatment in Brazil
2008 - ROSTELATO, MARIA E.C.M.; RELA, PAULO R.; ZEITUNI, CARLOS A.; FEHER, ANSELMO; MANZOLI, JOSE E.; MOURA, JOAO A.; MOURA, EDUARDO S.; SILVA, CONSTANCIA P.G.
The number of cancer patients in Brazil is increasing and part of the patients are submitted to brachytherapy treatment using iridium-192 wire and iodine-125 radioactive seeds. The Nuclear Energy Research Institute established a programme to produce iridium-192 wire and iodine-125 radioactive seeds. With the purpose of settling a laboratory for iridium-192 sources production, a wire activation method was developed and a hot cell for the wire manipulation, quality assurance and packaging was built. The iodine-125 seeds consist of a welded titanium capsule containing iodine-125 adsorbed onto a silver rod. Concerning the setup of the local production, the following activities were carried out: superficial treatment of the silver rod, development of a process to absorb the iodine in the silver rod, welding methodology to seal the seeds, leakage and contamination test and source activity measurement.
Tubing decontamination during the leak test of iodine-125 seeds
2010 - MOURA, JOAO A.; MOURA, EDUARDO S.; SPRENGER, FRANCISCO E.; NAGATOMI, HELIO R.; ZEITUNI, CARLOS A.; FEHER, ANSELMO; MANZOLI, JOSE E.; SOUZA, CARLA D.; ROSTELATO, MARIA E.C.M.
Leak tests were made to detect any leakage of radioactive material from inside the iodine-125 seeds applied in brachytherapy. These seeds are used in prostate cancer treatment. In the quality control routine, during seed production, leak tests are performed according to the International Standard Organization – radiation protection – sealed radioactive sources – ISO-9978 standard, and require liquid transfer between recipients. Any leakage causes contamination of the liquid and tubes. The aim of this study is the establishment of decontamination routines for tubes, allowing their repeated use, in the automated assay process.
Leakage test evaluation used for qualification of iodine-125 seeds sealing
2011 - FEHER, ANSELMO; ROSTELATO, MARIA E.C.M.; ZEITUNI, CARLOS A.; CALVO, WILSON A.P.; SOMESSARI, SAMIR L.; MOURA, JOAO A.; MOURA, EDUARDO S.; SOUZA, CARLA D.; RELA, PAULO R.