Este trabalho tem finalidade de produzir informações para implantação da qualidade de imagens em um setor de radiologia baseado em avaliações prévias das imagens por questionários, de aceitação e qualidade, como etapa de reconhecimento dos parâmetros empregados nas técnicas radiográficas. Após esta investigação os dados levantados foram divididos por grupo masculino, feminino, espessura PA e PF, índice de massa corporal, tipos de biótipos, parâmetros antropofórmicos, avaliação corporal associados às constantes na tensão e filtração adicional. Os resultados apresentam a predominância da constante 35 e 40 com filtração adicional de 0,5 a 1,5 mmAl, tensão para o gênero masculino (PA PF) de 86 a 92 kV e 96 a 112 kV, tensão para o gênero feminino de 85 a 98 kV e 96 a 112 kV, respectivamente. A carga aplicada ao tubo para o gênero masculino (PA e PF) está entre 5 a 10 mA.s e 5 a 16 mA.s e para o gênero feminino (PA e PF) está entre 6,3 a 8 mA.s e 9 a 14 mA.s.
With the development of computed tomography, tomography examinations have been replacing other modalities of imaging tests. Computed tomography angiography to pulmonary thromboembolism, for example, has been replacing pulmonary scintigraphy of ventilation/perfusion and angiography of pulmonary vessels. But angiotomography to the pulmonary thromboembolism is a complex examination, where factors such as scanning time, contrast injection flow, venous access caliber, venous access puncture site, use of the contrast injector, auto-trigger parameters, among others, interfere in the outcome of exam in the studied population. In this study, we performed the contrast ratio (RZC), relative the opacification of contrast in the trunk of the pulmonary artery and the descending aorta, which may vary according to the injection protocol used, determined by the flow of contrast injection (ml/s) associated with the auto-trigger (HU) parameters of the density reading in automatic mode of the equipment. For the injection of manual contrast, and its mean and standard deviation of RZC (2.66±3.56), for the flow (ml/s) and automatics reading (HU) protocols the means and standard deviations RZC consecutively are: 3.5 ml/s and 90 HU (3.68±2.79); 3.5 ml/s and 70 HU (1.90±0.72); 4.0 ml/s and 70 HU (1.98±0.56); 3.0 ml/s and 80 HU (2.15±0.89); 3.5 ml/s and 80 HU (1.50±0.36); 4.0 ml/s and 80 HU (3.91±3.22); 4.5 ml/s and 80 HU (4.69±4.82); 5.0 ml/s and 80 HU (4.27±3.78). The technique with the best result in the average level of RZC was the one that used a flow of 4.5 ml/s and auto-trigger in 80 HU.
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