LUCAS RODRIGUES DOS SANTOS
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Artigo IPEN-doc 26747 Evaluation of the behavior of a 180cc ionization chamber under different environmental conditions2019 - SILVA, E.; SANTOS, L.R.; ASSEMANY, L.P.F.; POTIENS, M.P.A.The use of ionizing radiation for medical purposes has been a major advance for society due to the numerous possibilities of use for the treatment and diagnosis of diseases. On the other hand, knowledge about the damage caused by the biological effects of ionizing radiation requires continuous improvement of diagnostic radiology quality control. Radiation detector equipment is used to measure radiation levels emitted from natural or artificial sources. For convenience and accuracy, among the most widely used detectors are ionization chambers. Especially outdoors, weather factors can affect the behavior of these detectors at the time of measurement, but Brazilian law recommends only calibrating these measuring instruments in a traceable laboratory every two years to ensure their reliability. The objective of this work was to evaluate the performance of an ionization chamber used in radioprotection measurements in diagnostic radiology equipment, considering climatic variations in different regions of Brazil. For this, a system was developed to simulate the environmental conditions found for the temperature and humidity parameters at the moment of the clinical measurements, allowing to estimate the influence of these factors on the obtained values.Artigo IPEN-doc 23585 Mammography calibration qualities establishment in a Mo-Mo clinical system2016 - CORREA, E.L.; SANTOS, L.R. dos; VIVOLO, V.; POTIENS, M.P.A.In this study the mammography calibration qualities were established in a clinical mammography system. The objective is to provide the IPEN instruments calibration laboratory with both mammography calibration methods (using a clinical and an industrial system). The results showed a good behavior of mammography equipment, in terms of kVp, PPV and exposure time. The additional filtration of molybdenum is adequate, air-kerma rates were determined and spectra were obtained.Artigo IPEN-doc 22367 Comparison of a KAP meter and a PDC behaviour using mathematical simulation in reference diagnostic radiology qualities2014 - POTIENS JUNIOR, A.J.; COSTA, N.A.; SANTOS, L.R.; CORREA, E.L.; VIVOLO, V.; POTIENS, M.P.A.Artigo IPEN-doc 21690 Mammography calibration qualities establishment in a Mo-Mo clinical system2015 - CORREA, E.L.; SANTOS, L.R. dos; VIVOLO, V.; POTIENS, M.P.A.Artigo IPEN-doc 21582 Evaluation of a measurements system for uranium electrodeposition control to radiopharmaceuticals production2015 - MADI FILHO, TUFIC; SALIBA SILVA, ADONIS M.; CARDENAS, JOSE P.N.; PEREIRA, MARIA da C.C.; LOPES, VALDIR M.; SILVA, ALEXANDRE P.; SANTOS, DIOGO F.; PURGATO, RAFAEL T.; AREDES, VITOR O.; FIGUEREDO, ANDERSON L.; SANTOS, LUCAS R. dos; SANTOS, BRIANNA dos S.; CORREA, EDUARDO L.Artigo IPEN-doc 01681 Tratamento do efluente gerado no processo de conversao do TCAU por precipitacao1988 - CARVALHO, E.F.U.; SANTOS, L.R.; RIELLA, H.G.Artigo IPEN-doc 15286 Artigo IPEN-doc 16884 Evaluation of the minimum detectable activity of whole body and thyroid counters at in vivo monitoring laboratory of IPEN/CNEN-SP2011 - SANTOS, LUCAS R. dos; XAVIER, MARCOS; CARDOSO, JOAQUIM C.S.Artigo IPEN-doc 16853 Penelope simulations of photon calibration fields at the LMIV-IPEN2011 - KAKOI, ADELIA A.Y.; HEREDIA, EDUARDO; RODRIGUES JUNIOR, ORLANDO; SANTOS, LUCAS R. dos; XAVIER, MARCOS; CARDOSO, JOAQUIM C.S.Artigo IPEN-doc 04339 Processo para obtencao de tricarbonato de amonio e uranilo1992 - SANTOS, L.R.; RIELLA, H.G.