“New 3-D mammograms have benefits, risks.” By Liz Szabo, USA Today

USA TODAY’s Liz Szabo asked screening experts to talk about the risks, limitations and potential benefits of a new screening method, the new 3-D mammogram. The technology, called tomosynthesis, provides three-dimensional images of the breast by using a technology similar to CT scans, or computed tomography. The imaging machine moves around the breast in an arc, taking multiple X-rays that a computer forms into a 3-D image. The Food and Drug Administration approved tomosynthesis last year. Studies haven’t proven that 3-D mammograms find significantly more cancers than traditional mammograms, or save lives. The procedures may help to curb the high number of false positives from traditional mammograms, but they also give women twice as much radiation as a standard mammogram, and radiation is a known cause of breast cancer.

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