By Joan Raymond 

Can MRI technology do a better job than mammography in detecting breast cancer? That question has been on the minds of many women after Christina Applegate revealed that her breast cancer was discovered after her doctor ordered the scan. While it can be a powerful diagnostic tool, most women may not benefit from MRI screening, says Dr. Len Lichtenfeld, deputy chief medical officer for the American Cancer Society. Not only are MRIs more expensive, the test also has more false positive results than mammography. But recent ACS guidelines (cancer.org) do recommend MRI, along with mammography, for women who are at the highest risk of developing the disease. That includes women like Applegate who have tested positive for a genetic mutation called BRCA or who have a close relative with the mutation and are untested. Currently, there isn’t enough evidence to recommend for or against MRI for women with more moderate risk factors. Best bet: talk to your doctor or call the ACS 24/7 at 800-227-2345.