The radiological appearance of the female breast varies among individuals because of
differences in the relative amounts and X-ray attenuation characteristics of fat and epithelial and …

The amount of radiologically dense breast-tissue appearing on a mammogram varies between
women because of differences in the composition of breast tissue, and is referred to here …

Variations in percent mammographic density (PMD) reflect variations in the amounts of
collagen and number of epithelial and non-epithelial cells in the breast. Extensive PMD is …

Background Extensive mammographic density is associated with an increased risk of breast
cancer and makes the detection of cancer by mammography difficult, but the influence of …

… In this work, all measurements were performed by one observer (NF Boyd). Images were
presented in randomized order as described above for the radiological assessment, and again …

Quantitative classification of mammographic parenchyma based on radiological assessment
has been shown to provide one of the strongest estimates of the risk of developing breast …

Background Women with extensive dense breast tissue visible on a mammogram have a
risk of breast cancer that is 1.8 to 6.0 times that of women of the same age with little or no …

… Duric and NF Boyd, unpublished observations). To determine the stability of breast density
measurements by ultrasound tomography in the same … Duric and NF Boyd, unpublished data). …

Animal experiments and human ecological studies suggest that dietary fat intake is associated
with a risk of breast cancer, but individual-based studies have given contradictory results. …

… Studies of the relationship between breast tissue histology and the radiological appearance
of the breast (described in detail by Boyd and coworkers [9]), using surgical biopsies or …