MRI's high false positive rate has little impact on women's choice of preventive mastectomy

Magnetic resonance imaging (MRI) falsely detects breast cancer in five out of every six positive scans according to new research into the use of MRI for women with a high, inherited risk of developing the disease. However, this high rate of false positives does not have a major impact on a woman’s decision whether or not to have a prophylactic mastectomy.