Intensity variation study of the radiation field in a mammographic system using thermoluminescent dosimeters TLD-900 (CaSO4:DY)

Intensity variation study of the radiation field in a mammographic system using thermoluminescent dosimeters TLD-900 (CaSO4:DY)

Author Correa, E. L. Autor UNIFESP Google Scholar
Silva, J. O. Google Scholar
Vivolo, V. Google Scholar
Potiens, M. P. A. Google Scholar
Daros, K. A. C. Autor UNIFESP Google Scholar
Medeiros, R. B. Autor UNIFESP Google Scholar
Institution Inst Pesquisas Energet & Nucl IPEN CNEN
Universidade Federal de São Paulo (UNIFESP)
Abstract This study presents the results of the intensity variation of the radiation field in a mammographic system using the thermoluminescent dosimeter TLD-900 (CaSO4:Dy). These TLDs were calibrated and characterized in an industrial X-ray system used for instruments calibration, in the energy range used in mammography. They were distributed in a matrix of 19 lines and five columns, covering an area of 18 cm x 8 cm in the center of the radiation field on the clinical equipment. the results showed a variation of the intensity probably explained by the non-uniformity of the field due to the heel effect. (C) 2013 Elsevier B.V. All rights reserved.
Keywords Mammography
Radiation field mapping
Quality control
TL dosimetry
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Ministerio da Ciencia e Tecnologia (MCT, Project: Instituto Nacional de Ciencia e Tecnologia (INCT) em Metrologia das Radiacoes na Medicina), Brazil
Date 2014-02-01
Published in Radiation Physics and Chemistry. Oxford: Pergamon-Elsevier B.V., v. 95, p. 116-118, 2014.
ISSN 0969-806X (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 116-118
Origin http://dx.doi.org/10.1016/j.radphyschem.2013.03.010
Access rights Closed access
Type Article
Web of Science ID WOS:000329271400027
URI http://repositorio.unifesp.br/handle/11600/37390

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