3D Whole Breast Ultrasound (ABUS) 3D whole breast ultrasound, also known as ABUS, gives us the ability to provide the most advanced technology on the market for screening patients with dense breasts. In conjunction with a mammogram, 3D whole breast ultrasound offers a better chance to diagnose breast cancer early at a more treatable stage. Approximately 40 percent of women have dense breasts, which means there is more dense tissue than fat in the breasts. Dense breasts make it up to six times more likely to develop breast cancer. And they make it challenging to detect cancer with a standard mammography exam alone. 3D whole breast ultrasound (ABUS) improves cancer detection by 35 percent over mammography alone in women with dense breasts.