Navegando por Palavras-chave "Calculus"

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    Definição do nível da junção ureterovesical pela tomografia computadorizada
    (Colégio Brasileiro de Radiologia e Diagnóstico por Imagem, 2006-12-01) Freire Filho, Edison de Oliveira [UNIFESP]; Leão, Alberto Ribeiro de Souza [UNIFESP]; Capobianco, Júlia [UNIFESP]; Szejnfeld, Jacob [UNIFESP]; D'Ippolito, Giuseppe [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    OBJECTIVE: To define, by means of computed tomography, the level of ureteral implantation into de bladder. MATERIALS AND METHODS: We have measured the distances from the ureteral meatus to the acetabulum, and to the superior margin of the pubic symphysis, as well as the bladder volume, using contrast enhanced computed tomography of the pelvis in 46 patients (31 male and 15 female) in the age range between 18 and 45 years, with at least one of the ureteres filled with excreted contrast material. The Student t test has been applied to determine eventual statistically significant differences between groups. RESULTS: The level of ureteral implantation into the bladder was, on average, 10.6 ± 8.1 mm below the acetabular roof, and 29.7 ± 9.5 mm above the superior margin of the pubic symphysis. In patients with bladder repletion volume of < 200 ml and > 200 ml, the level of ureteral implantation into the bladder was, respectively, on average, 11.6 ± 7.3 mm and 10.2 ± 8.4 mm below the acetabular roof (p = 0.61), and 28.3 ± 7.3 mm and 30.3 ± 10.2 mm above the superior margin of the pubic symphysis (p = 0.52), and in male and female men patients, respectively, on average, 11.8 ± 8.0 mm and 8.3 ± 8.0 mm below the acetabular roof (p = 0.17), and 27.7 ± 9.2 mm and 33.9 ± 8.8 mm above the superior margin of the pubic symphysis (p = 0.34). CONCLUSION: Calcifications located < 3 cm below the acetabular roof and < 1.5 cm above the superior margin of the pubic symphysis probably do not represent ureteral calculi. Vesical repletion or sex have no significant influence on the ureteral meatus position.
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    Uma evolução histórica do conceito de área
    (Universidade Federal de São Paulo (UNIFESP), 2019-04-04) Silva Junior, Carlos Correa Da [UNIFESP]; Gama, Marcelo Cristino [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    The present work presents to the reader the historical evolution of the concept of the calculation of areas, carried out through a timeline, from the first records to the modern times, besides a work proposal that involves the deduction of the formulas of the areas of the main plane figures. The story begins about 1 550 BC, with the exhibition of the famous Papyrus of Rhind and its contents, in which are worked some practical problems of the daily life, as its resolutions, passing later by Euclides of Alexandria and Archimedes of Syracuse, by the appearance of a new Geometry and finally the creation of the Integral Calculus. This journey through the History of Mathematics is carried out through a panorama from the 16th century BC to the 17th century AD. Finally, it presents a didactic approach for the simple comprehension of the formulas of the main areas of plane figures, by means of relations of several figures with the area of previously determined rectangle.