Digital Breast Tomosynthesis (also known as 3D Mammography) creates multiple images that allow the radiologists to look at different layers of the breast tissue, helping to distinguish normal breast tissue from abnormal breast tissue. Tomosynthesis is of greatest benefit to women with dense breast tissue. The USPSTF also reviewed tomosynthesis and concluded there is "not enough evidence to determine whether it will result in improved health or quality of life or fewer deaths among women." Data on mortality takes 20-30 years to gather; so it is too soon to formally assess mortality rates for 3D mammography. However, "accuracy data" is available. In fact, Charlotte Radiology's data of 3D mammography reflects a 35% decrease in our recall rate in women with dense breast tissue, which helps decrease the anxiety of false positives often cited as a harm by the USPSTF. Additionally, we are finding a higher cancer detection rate increasing our catches of invasive breast cancers.