Mammography is one of the best ways to detect breast cancer early enough that treatment can be expected to lead to good outcomes. And because breast cancer is the leading non-skin cancer in women and the second most common cause of cancerrelated mortality in women [1], encouraging regular mammograms is an excellent preventive strategy.At least in part because of the increased demand for breast imaging, the federal government has taken a marked interest in mammography services. Congress passed the Mammography Quality Standards Act (MQSA) in 1992 to better regulate the field of breast imaging. Specifically, the act sought to correct four areas of concern: (1) poor quality equipment, (2) a lack of quality assurance procedures, (3) poorly trained radiologic technologists and interpreting physicians, and (4) a lack of facility inspections or consistent governmental oversight [2].Whether or not the MQSA has succeeded in resolving these problems in mammography remains an open question-there have been clear gains and losses in breast imaging as a result of the act. This commentary will discuss several of these.
Standards and AccessPrior to the implementation of the MQSA, the quality of breast imaging varied greatly by geography. Accreditation programs at the time were strictly voluntary; only half of all mammography facilities had applied for accreditation by 1991, and only half of those that applied had earned accreditation [3]. Many of the failures had to do with substandard equipment that produced images that were difficult to interpret correctly. As a result of the MQSA, equipment had to be upgraded or replaced to meet federal standards for image quality. Ensuring a high-quality image reduces the number of scans women must endure and enables physicians to report findings more accurately. Therefore, many believe that the MQSA improved the standard of care for women having mammograms.Of course, an increase in the standard did not come without cost. Mammography facilities that could not meet the equipment or personnel requirements were forced to close or merge with others. Often financial considerations drove these changes. There is some evidence of long wait times for patients to access mammography services [4], but it is not clear whether there was a significant decrease in overall