Computer-aided Mammography: Should You Consider It?
Breast cancer is the most common type of cancer in American women. Chances of successful treatment are the greatest when the cancer is detected in its early stages. Mammography is a screening test which creates images of the breasts so a radiologist can locate suspicious areas. Mammography is not perfect, and researchers are working on ways to improve its accuracy. One type of technology to try make mammograms better is computer-aided mammography, also known as computer-aided detection (CAD).
What Is Computer-aided Mammography?In traditional mammography, a radiologist reviews an x-ray of the breast to locate any suspicious areas and determine whether further diagnostic testing is necessary. With CAD, the radiologist uses a computer program to help detect suspicious areas on a mammogram after the initial review is done.
What Does the Evidence Say?A study published in the New England Journal of Medicine showed that CAD may falsely suggest suspicious areas of growth in the breast, but may not substantially detect more breast cancer cases. The study reported that for every 100,000 mammograms, 2,985 more false positive mammograms will occur, and five more cancers will be detected. In another recent study published in the Journal of the National Cancer Institute, researchers concluded that the use of CAD did not improve the rate of detecting cancer.