EDUARDO DE LIMA CORREA
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Artigo IPEN-doc 25107 Influence of the vials radioactive residue in Nuclear Medicine procedure applied to a new “in situ” activimeter calibration methodology2019 - KUAHARA, L.T.; CORREA, E.L.; CARNEIRO, R.C.G.; BEZERRA, R.R.L.; POTIENS, M.P.A.In this study we present a new “in situ” calibration methodology establishment for activimeters – i.e., this equipment calibration can be made at the hospital and/or the nuclear medicine service (NMS) – and also the importance of considering vials radioactive residue when generating the calibration coefficient in terms of activity (NA). For the calibration, two methods are presented here: in the first, 99mTc sample activity (AC) is measured in the NMS. Then it is sent to the Instruments Calibration Laboratory (LCI/IPEN) where the reference activity (AR) is obtained under controlled conditions in a reference vial. After geometry and residue corrections, NA is calculated. In the second method, AR is obtained at the LCI, then 99mTc sample is sent to the hospital/NMS, where AC is measured and NA calculated. Calibration methodologies were applied to three NMS and to four equipment belonging to the radiopharmaceutical production facility (CR) at the Nuclear and Energy Research Institute (IPEN). Both methodologies were tested with and without residual activity corrections under controlled conditions. Variations of up to 4% were obtained.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 21154 Teste de estabilidade dos sistemas de raios X do Laboratorio de Calibração do IPEN2015 - BARROS, ISRAEL D.; CORREA, EDUARDO L.; POTIENS, MARIA P.A.; VIVOLO, VITOR; SILVA, ERIC A.B.Artigo IPEN-doc 21057 Determination of geometry correction factors to different vials used to radiopharmaceutical activity measurements2015 - KUAHARA, LILIAN T.; CORREA, EDUARDO L.; POTIENS, MARIA da P.A.Artigo IPEN-doc 20422 Acceptance test of an activity meter to be used as reference in a calibration methodology establishment2014 - CORREA, EDUARDO L.; KUAHARA, LILIAN T.; POTIENS, MARIA da P.A.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 19447 Quality control tests of an activity meter to be used as reference for an in situ calibration methodology2013 - CORREA, EDUARDO de L.; KUAHARA, LILIAN T.; POTIENS, MARIA da P.A.Artigo IPEN-doc 19466 Testes de controle de qualidade em calibradores de dose utilizados em laboratórios de pesquisa do IPEN2013 - KUAHARA, LILIAN T.; MARTINS, ELAINE W.; DIAS, CARLA R.; CORREA, EDUARDO de L.; POTIENS, MARIA da P.A.; JUNIOR, AMAURY C.R.Artigo IPEN-doc 16951 Comparison of KVp and PPV measurements between a constant potential and clinical x-ray system used for calibration in mammography2011 - CORREA, EDUARDO de L.; VIVOLO, VITOR; POTIENS, MARIA da P.A.Artigo IPEN-doc 13391 Evaluation of ionization chambers in X-ray beams used for instruments calibration2008 - CORREA, EDUARDO de L.; POTIENS, MARIA da P.A.; CALDAS, LINDA V.E.; VIVOLO, VITOR