Digital Mammography with Tomosynthesis
Tomosynthesis is a type of digital mammography. In conventional mammography, a 3-D structure (the breast) is evaluated with a 2-D image. A major drawback of mammography is that structures can be superimposed on a single image. This can result in cancers being hidden on the image or can cause the false appearance of cancer, leading to unnecessary biopsies and other follow-up procedures.
Tomosynthesis is a 3-D digital technique that removes the effect of superimposed structures by taking multiple low-dose exposures of the breast and processing the information into 1 millimeter-thick slices. This shows promise in improving detection of breast cancers by mammography and decreasing the rate of false-positive studies.