Utilization of Tandem systems for the detection of impurities in radiopharmaceuticals
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2004
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INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, 11th
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Resumo
In this work tandem systems were established and characterized using four cylindrical absorbers of
materials with different densities for an additional quality control test. The study was performed using two
secondary standard systems NPL and a homemade system composed by a well-type ionization chamber made at
IPEN and a Keithley electrometer. For the establishment of the tandem systems non sealed sources were utilized.
The samples with impurities were measured using combinations with different proportions of radionuclides. The
ratio between the measurements with different absorbers presented constant values for each dose calibrator and
pure source. The results obtained with the materials with impurities using the absorbers presented constant, but
different values, depending on the impurity and its proportion in the mixture. Therefore, the use of tandem
systems may be recommended for quality control programs.
Como referenciar
CECATTI, S.G.P.; CALDAS, L.V.E. Utilization of Tandem systems for the detection of impurities in radiopharmaceuticals. In: INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, 11th, 23-28 May, 2004, Madrid, Spain. Disponível em: http://repositorio.ipen.br/handle/123456789/17521. Acesso em: 26 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.