FDAnews
www.fdanews.com/articles/149564-fda-oks-first-ultrasound-imaging-system-for-dense-breasts

FDA OKs First Ultrasound Imaging System for Dense Breasts

September 19, 2012
The FDA has approved the first ultrasound device to detect breast cancer in women with dense breast tissue, for use along with standard mammography for women with no symptoms of breast cancer, the agency said.
U.S. News & World Report