Data/hora: 05/06/2024 02:33:06

Provedor de dados: | 52
País: | Brazil
Título: | Determination of 99Mo contamination in a nuclear medicine patient submitted to a diagnostic procedure with 99mTc
Autores: | Dantas,Bernardo Maranhão; Dantas,Ana Letícia Almeida; Marques,Fábio Luiz Navarro; Bertelli,Luiz; Stabin,Michael G.
Data: | 2005-10-01
Ano: | 2005
Palavras-chave: | Molybdenum 99; Technetium 99m; Nuclear medicine; Internal dosimetry; In vivo measurements; Whole body counter.
Resumo: | 99mTc is a radionuclide widely used for imaging diagnosis in nuclear medicine. In Brazil it is obtained by elution from 99Mo-99mTc generators supplied by the Nuclear Energy Research Institute (IPEN). The elution is carried out in radiopharmacy laboratories located in hospitals and clinics. Depending of the quality of the generator and conditions of use during the elution process, 99Mo can be extracted from the column of the generator, becoming a radionuclidic impurity of the eluate used for the obtention of the radiopharmaceutical to be administered to the patient. 99Mo emits high-energy photons and beta particles and its presence degrades the quality of the image and unnecessarily increases the radiation dose delivered to the patient. An in-vivo measurement technique was developed to verify the occurrence of internal contamination by 99Mo in nuclear medicine patients. Direct measurements were made in a volunteer who underwent myocardial scintigraphy with 99mTc-sestamibi. The results indicated the presence of internal contamination of the patien by 99Mot. The activity was tracked for several days, and an assessment of the radiation dose from the contaminant 99Mo was made.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000700032
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132005000700032
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.48 n.spe2 2005
Fonte: | info:eu-repo/semantics/openAccess