RODRIGO FERREIRA DE LUCENA
9 resultados
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Resumo IPEN-doc 14669 Testes das grandezas PPV e kVp utilizando um medidor de tensao nao invasivo visando um aperfeicoamento na aquisicao de medidas2009 - DIAS, DANIEL M.; LUCENA, RODRIGO F. de; FRANCISCATTO, PRISCILA C.; CORREA, EDUARDO de L.; VIVOLO, VITOR; POTIENS, MARIA da P.A.Artigo IPEN-doc 12130 Improvement of gamma calibration procedures with commecial management software2007 - POTIENS, MARIA da P.A.; LUCENA, RODRIGO F.; SANTOS, GELSON P.; VIVOLO, VITORArtigo IPEN-doc 15766 Analise do comportamento de um medidor de tensao nao invasivo no intervalo de mamografia2010 - CORREA, EDUARDO de L.; LUCENA, RODRIGO F. de; VIVOLO, VITOR; POTIENS, MARIA da P.A.Artigo IPEN-doc 13392 Tests with different kind of kVp-meters in standard X-ray beams used for instruments calibration, in diagnostic radiology level2008 - LUCENA, RODRIGO F. de; POTIENS, MARIA da P.A.; CALDAS, LINDA V.E.; VIVOLO, VITORIn this work, tests were carried out in one X-ray system, Medicor Mövek Röntgengyara, Model NeoDiagnomax, (single –phase, full wave rectified) that operate in the range from 40 kV to 100 kV, and fixed 6 mA in the fluoroscopic mode, with total filtration of 2.5 mmAl. It was used as reference system an invasive system from Radcal, model Dynalyzer IIITM. The equipments tested were three non-invasive instruments, one PTW, model DiavoltTM, and two Victoreen, model NEROTM. It was performed measurements with those equipments, in the range from 50 kV to 100 kV, in steps of 10 kV and current of 6 mA (fixed). The quantity measured was kVpmax. The results showed the maximum variation of 3 % for one NEROTM and 1 % for the other equipment of the same type, and 0,3 % for DiavoltTM related to the invasive reference measurement system. The differences in the obtained values could be caused by the different kind of equipment used in that, their manufacturer calibration and aged.Artigo IPEN-doc 14628 Comparacao de espectros de raios X gerados por um alvo de W e filtracao adicional de Mo e Al para aplicacoes em metrologia na mamografia2009 - CORREA, EDUARDO de L.; LUCENA, RODRIGO F. de; POTIENS, MARIA da P.A.; VIVOLO, VITORArtigo IPEN-doc 15020 Measurements of KVp and air kerma values in function of the electric current quantity and the focus-detector distance in one x-ray equipment2009 - LUCENA, RODRIGO F.; POTIENS, MARIA da P.A.; VIVOLO, VITORArtigo IPEN-doc 17379 Análise do comportamento de um medidor de tensão não invasivo no intervalo de mamografia2011 - CORREA, EDUARDO de L.; LUCENA, RODRIGO F. de; VIVOLO, VITOR; POTIENS, MARIA da P.A.Artigo IPEN-doc 18288 Evaluation of the voltage quantities measured with different noninvasive meter for quality control at a calibration laboratory2012 - VIVOLO, VITOR; NEVES, LUCIO P.; PERINI, ANA P.; SILVA, JONAS O.; LUCENA, RODRIGO F.; POTIENS, MARIA da P.A.; CALDAS, LINDA V.E.Artigo IPEN-doc 18348 Análise dos efeitos da filtração adicional em feixes de raios X a partir dos cálculos de energia média por fóton em espectros de raios X2012 - LUCENA, RODRIGO F.; POTIENS, MARIA da P.A.