Mammographic Density
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Breast density pattern characterization by histogram features and texture descriptors
Abstract Introduction Breast cancer is the first leading cause of death for women in Brazil as well as in most countries in the world. Due to the relation between the breast density and the risk of breast cancer, in medical practice, the breast density classification is merely visual and dependent on professional experience, making this task very subjective
Res. Biomed. Eng.. Publicado em: 06/04/2017
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2. The association of breast arterial calcification and metabolic syndrome
OBJECTIVES: We investigated the relationship between metabolic syndrome and breast arterial calcification detected via mammography in a cohort of postmenopausal subjects. METHODS: Among 837 patient
Clinics. Publicado em: 2014
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3. Prevalence of ERα-397 PvuII C/T, ERα-351 XbaI A/G and PGR PROGINS polymorphisms in Brazilian breast cancer-unaffected women
Polymorphisms of hormone receptor genes have been linked to modifications in reproductive factors and to an increased risk of breast cancer (BC). In the present study, we have determined the allelic and genotypic frequencies of the ERα-397 PvuII C/T, ERα-351 XbaI A/G and PGR PROGINS polymorphisms and investigated their relationship with mammographic densit
Braz J Med Biol Res. Publicado em: 2012-10
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4. Prevalence of the STK15 F31I polymorphism and its relationship with mammographic density
Several studies have identified the single nucleotide polymorphism STK15 F31I as a low-penetrance risk allele for breast cancer, but its prevalence and risk association in the Brazilian population have not been determined. The goal of this study was to identify the frequency of this polymorphism in the Brazilian setting. Considering the high degree of admixt
Braz J Med Biol Res. Publicado em: 2011-04
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5. Prevalence of the STK15 F31l polymorphism and its relationship with mammographic density
Several studies have identified the single nucleotide polymorphism STK15 F31I as a low-penetrance risk allele for breast cancer, but its prevalence and risk association in the Brazilian population have not been determined. The goal of this study was to identify the frequency of this polymorphism in the Brazilian setting. Considering the high degree of admixt
Publicado em: 2011
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6. ESTUDO E IMPLEMENTAÇÃO DE TESTES DE CONTROLE DE QUALIDADE EM NEGATOSCÓPIOS NA CIDADE DE ARACAJU-SE. / STUDY AND IMPLEMENTATION OF TESTS QUALITY CONTROL NEGATOSCOPES THE CITY OF ARACAJU.
Taking into account the requirement of current legislation in Brazil, Decree 453/98, the Ministry of Health and several subtle nature of radiographic findings, it is important to know how the detectability of objects with lower density or smaller can be influenced by the intensity of light light box used in his lectures. Thus, this project aimed to establish
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2010
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7. Polymorphism in CYP17, GSTM1 and the progesterone receptor genes and its relationship with mammographic density
Radiologic breast density is one of the predictive factors for breast cancer and the extent of the density is directly related to postmenopause. However, some patients have dense breasts even during postmenopause. This condition may be explained by the genes that codify for the proteins involved in the biosynthesis, as well as the activity and metabolism of
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-04
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8. Associação entre polimorfismos do gene do receptor alfa de estrogênio com a densidade mamográfica em mulheres após a menopausa. / Estrogen alpha receptor gene polymorphisms association with mammographic density in postmenopausal women.
Introduction: Genes that encode proteins involved at biosynthesis, action and metabolism of sexual steroids are polymorphics. This condition could explain individual variations in mammographic density. The objectives of this study were to evaluate a possible association of clinical characteristics and polymorphisms HaeIII, MspI and XbaI of the estrogen recep
Publicado em: 2009
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9. DETECTION OF MASSES IN MAMMOGRAPHY IMAGES USING CELLULAR NEURAL NETWORKS, STATISCAL FUNCTIONS VECTOR MACHINES AND SUPPORT / DETECÇÃO DE MASSAS EM IMAGENS MAMOGRÁFICAS USANDO REDES NEURAIS CELULARES, FUNÇÕES GEOESTATÍSTICAS E MÁQUINAS DE VETORES DE SUPORTE
Breast cancer presents high occurrence frequency among the world population and its psychological effects alter the perception of the patients sexuality and the own personal image. Mammography is an x-ray of the mamma that allows the precocious detection of cancer, since it is capable to showing lesions in their initial stages, typically very small lesions i
Publicado em: 2009
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10. Densidade mamográfica antes e após o uso de tibolona: auxílio da informática / Mamographic Density Before and After the Use of Tibolone: Computer Help
Over the last few years, hormonal therapy has been subject of much controversy since various studies have shown contradictory results regarding the risks and benefits for users. A higher incidence of breast carcinoma among users of classical hormonal therapy has been demonstrated in some studies and therefore there is a constant search regarding the refineme
Publicado em: 2007
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11. Hormone therapy and breast density in women with premature ovarian failure / Terapia hormonal e densidade mamaria em mulheres com falencia ovariana prematura
Introuction: Premature ovarian failure (POF) may lead to serious consequences due to a prolonged low estrogen state and there is a precise indication for hormone replacement therapy to minimize such alterations. Studies have evaluated the impact of hormone therapy on the breasts of postmenopausal women, however the consequences of treatment on the breasts of
Publicado em: 2007
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12. Critical analysis and estimative of predictive positive value of non benign mammographic aspect calcifications / "Análise crítica e estimativa dos valores preditivos positivos das calcificações de aspecto mamográfico não benigno"
Five hundred and seven cases of calcificações had been evaluated about its characteristics (density, morphology, distribution, extension and number) and association with the breast cancer. Using the VPP of each type of calcifications they had been categorized by the BI-RADS system in categories 4Â (2 to10%), 4B (10,1 to 30%) and 4C (30,1 to 70.0%) and cat
Publicado em: 2006