Determination of uncertainties associated to the in vivo measurement of iodine-131 in the thyroid
Carregando...
Data
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Minas Gerais
Descrição
Tipo
Artigo de periódico
Título alternativo
Primeiro orientador
Membros da banca
Resumo
Intakes of radionuclides can be estimated through in vivo measurements, and the uncertainties asso ciated to the measured activities should be clearly stated in monitoring program reports. This study aims to evaluate the uncertainties of in vivo monitoring of iodine 131 in the thyroid. The reference values for high-energy photons are based on the IDEAS Guide. Measurements were performed at the In VivoMonitoring Laboratory of the Institute of Radiation Protection and Dosimetry (IRD) and at the Internal Dosimetry Laboratory of the Regional Center of Nuclear Sciences (CRCN-NE). In both institutions, the experiment was performed using a NaI(Tl) 3′′3″ scintillation detector and a neck-thyroid phantom.Scattering factors were calculated and compared in different counting geometries. The results show that the technique produces reproducibility equivalent to the values suggested in the IDEAS Guide and measurement uncertainties is comparable to international quality standards for this type of in vivo monitoring.
Abstract
Assunto
Glândula Tireoide, Compostos de Iodo
Palavras-chave
Measurement uncertainty, In vivo measurement, Iodine-131, Thyroid
Citação
Departamento
Curso
Endereço externo
https://www.sciencedirect.com/science/article/pii/S0969804316301300?via%3Dihub