Breast imaging plays a critical role in the detection, diagnosis, and management of women diagnosed with breast cancer. Although there are a multitude of risk factors associated with breast cancer, such as female gender, increasing age, and family history, the density of breast tissue as evident on mammography has more recently been identifed as an independent risk factor . Although some studies suggest that the lifetime risk increases by four to six times for women with dense breast tissue, this is misleading as this compares women with extremely dense tissue to women with predominantly fatty breasts, both of which represent a minority of the population . More realistically, the lifetime risk is only increased by 1.2–2.1 times in a woman with heterogeneously dense or extremely dense breasts, respectively, when compared to the average woman who has scattered fbroglandular tissue. However, as breast density is known to lower the sensitivity of mammography due to “masking” of cancers, the integration of newer modalities for the management of newly diagnosed breast cancer, such as digital breast tomosynthesis, ultrasound, and magnetic resonance imaging (MRI), continues to evolve. In addition, recent legislative efforts that mandate direct patient otifcation of breast density exist in nearly 50% of states in the USA. Consequently, there is a growing research on developing more sensitive and specifc tools to “see through” the dense tissue and therefore permit earlier cancer detection, which should translate into improved outcomes.