Influence of the vials radioactive residue in Nuclear Medicine procedure applied to a new “in situ” activimeter calibration methodology
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Radiation Physics and Chemistry
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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.
Como referenciar
KUAHARA, L.T.; CORREA, E.L.; CARNEIRO, R.C.G.; BEZERRA, R.R.L.; POTIENS, M.P.A. Influence of the vials radioactive residue in Nuclear Medicine procedure applied to a new “in situ” activimeter calibration methodology. Radiation Physics and Chemistry, v. 155, p. 291-293, 2019. SI. DOI: 10.1016/j.radphyschem.2018.06.021. Disponível em: http://repositorio.ipen.br/handle/123456789/29776. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.