Estudo da dose de radiação absorvida em exames de radiodiagnóstico: comparação entre diferentes equipamentos de raios X

• Autor(a) principal: Fernandes, Marco Antonio Rodrigues [UNESP]
• Data de Publicação: 2012
• Outros Autores: Reis, Charlene Oliveira dos [UNESP], Garcia, Paulo Lázaro [UNESP], Lima, Marcelo Aparecido Ferraz de [UNESP], Dalaqua, Fernando Luis Duchevischi [UNESP], Costa, Vladimir Eliodoro [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.fatecbtu.org.br; http://hdl.handle.net/11449/140585
• topic: Quality control; Radiation dose; X-ray; Radiological techniques; Control de cualidad; Dosis de radiación; Rayos X; Técnicas; Controle de qualidade; Dose de radiação; Raios-x; Técnicas radiológicas

The paper presents the measures of the absorbed radiation dose in radiological exams accomplished in three different x-ray equipments, using the same techniques radiographics routine in the radiology service of the Clinics Hospital of UNESP of Botucatu. The respective values of the measures were analyzed in graph correlating the dose with the respective beam energy (kVp), extracting like this a mathematical expression from the dose in function of the kVp. This expression can aid the professionals of the radiological techniques in the determination of the most appropriate kVp than it can minimize of absorbed radiation dose for the patients during the x-ray procedures, and to avoid the repetition of exams. The results show that the radiation dose can vary of to 1,24 mGy of an x-ray equipment for other inside of the same service and considering the same radiological technique. It was observed that the absorbed radiation dose went systematically larger for the equipment C, following by the equipment B, and the equipment A provides to smallest dose. The paper reinforces that the responsible professional for the accomplishment of the radiological exams should have full knowledge of the condition of operation of the radiation equipments, and that the radiological techniques (kVp and mAs) they should be adjusted for the respective x-ray equipments used.