نتایج جستجو برای: breast density

تعداد نتایج: 652681  

2016
Minu George Erika R. E. Denton Reyer Zwiggelaar

It has been shown that breast density and parenchymal patterns are significant indicators in mammographic risk assessment. In addition, studies have shown that the sensitivity of computer aided tools decreases significantly with increase in breast density. As such, mammographic density estimation and classification plays an important role in CAD systems. In this paper, we present the classifica...

2005
Arnau Oliver Jordi Freixenet Anna Bosch David Raba Reyer Zwiggelaar

A recent trend in digital mammography are CAD systems, which are computerized tools designed to help radiologists. Most of these systems are used for the automatic detection of abnormalities. However, recent studies have shown that their sensitivity is significantly decreased as the density of the breast is increased. In addition, the suitability of abnormality segmentation approaches tends to ...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2016
Norhayati Mohd Zain Vengkatha Priya Seriramulu Kanaga Kumari Chelliah

BACKGROUND Bone mineral density (BMD) is a lifetime marker of estrogen in a woman's body and has been associated with increased breast cancer risk. Nonetheless the actual association is still debatable. Furthermore, estrogen is very crucial in maintaining human bone density and gradually decreases over age. A systematic search was conducted to assess any association of BMD with breast cancer ri...

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2005
Rulla M Tamimi Susan E Hankinson Graham A Colditz Celia Byrne

BACKGROUND Mammographic density is one of the strongest predictors of breast cancer risk. The mechanism by which breast density increases breast cancer risk is unclear although it has been hypothesized that breast density reflects cumulative exposure to estrogens. METHODS To evaluate this hypothesis, we conducted a cross-sectional study among 520 postmenopausal women in the Nurses' Health Stu...

2012
Gretchen L. Gierach Laura Ichikawa Karla Kerlikowske Louise A. Brinton Ghada N. Farhat Pamela M. Vacek Donald L. Weaver Catherine Schairer Stephen H. Taplin Mark E. Sherman

Methods We evaluated relationships between mammographic density and risk of death from breast cancer and all causes within the US Breast Cancer Surveillance Consortium. We studied 9232 women diagnosed with primary invasive breast carcinoma during 1996–2005, with a mean follow-up of 6.6 years. Mammographic density was assessed using the Breast Imaging Reporting and Data System (BI-RADS) density ...

2012
Ralph Highnam Natascha Sauber Stamatia Destounis Jennifer Harvey Dennis McDonald

It is well established that breast density is related to breast cancer risk; making that connection precise, and understanding how to use it in clinical practice, has been a major academic focus since the 1970’s. However, it transpires that the first clinical uses of breast density have not been for risk prediction, rather they are for judging when to recommend further imaging. In this paper, w...

Journal: :Academic radiology 2009
Despina Kontos Predrag R Bakic Ann-Katherine Carton Andrea B Troxel Emily F Conant Andrew D A Maidment

RATIONALE AND OBJECTIVES Studies have demonstrated a relationship between mammographic parenchymal texture and breast cancer risk. Although promising, texture analysis in mammograms is limited by tissue superposition. Digital breast tomosynthesis (DBT) is a novel tomographic x-ray breast imaging modality that alleviates the effect of tissue superposition, offering superior parenchymal texture v...

2017
Stamatia Destounis Andrea Arieno Renee Morgan Christina Roberts Ariane Chan

Mammographic breast density (MBD) has been proven to be an important risk factor for breast cancer and an important determinant of mammographic screening performance. The measurement of density has changed dramatically since its inception. Initial qualitative measurement methods have been found to have limited consistency between readers, and in regards to breast cancer risk. Following the intr...

1987
Kostas Marias Christian Behrenbruch Ralph Highnam Michael Brady Santilal Parbhoo Alexander Seifalian

In this paper, we explore the idea of quantifying local breast-tissue density changes. Breast tissue density has been correlated to breast cancer incidence in numerous studies which have shown a statistical relationship between glandular density and the occurrence of cancer. In particular, postmenopausal women who take HRT run an increased risk of developing cancer due to the “regeneration” of ...

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