2009
DOI: 10.1590/s0100-39842009000600012
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Efeito da filtração adicional nas doses de radiação e na qualidade das imagens nos exames videofluoroscópicos

Abstract: OBJETIVO: Investigar o efeito da adição de filtros de alumínio (1 mm) e cobre (0,4 mm) na redução das doses efetivas de radiação e na qualidade das imagens em exames videofluoroscópicos. MATERIAIS E MÉTODOS: Ao tubo de raios X adicionou-se câmara de ionização conectada a um eletrômetro para medir o produto kerma-área, com técnica de 65 kVp e 0,7 mA, sem e com adição dos filtros. Foi medida resolução espacial, a de baixo contraste e tons de cinza, utilizando os objetos de teste de Leeds. Quinze voluntários tive… Show more

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Cited by 4 publications
(4 citation statements)
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“…The radiation levels used for the examination are considered low and acceptable, considering the amount of information gathered, 25 and its use is justifiable given the better cost-benefit ratio of choosing videofluoroscopy. 26…”
Section: Discussionmentioning
confidence: 99%
“…The radiation levels used for the examination are considered low and acceptable, considering the amount of information gathered, 25 and its use is justifiable given the better cost-benefit ratio of choosing videofluoroscopy. 26…”
Section: Discussionmentioning
confidence: 99%
“…The bolus trajectory is visualized in real time and, thus, use of the contrast optimizes obtaining a high sensitivity and specificity exam in diagnosing tracheal aspiration 4 . And the exam is recorded for subsequent analysis 2,4,7 .…”
Section: Methodsmentioning
confidence: 99%
“…Lower kerma-area product rates and better image quality represent realities available today (3,4) . It is important that the radiologist knows all the potential of the videofluoroscopic method, particularly the videofluoroscopic swallowing studies.…”
Section: Editorialmentioning
confidence: 99%