女性到了中年后会被建议每年去做乳房钼靶检查（Mammogram）。你会不会担心X光对身体的危害? 这张图仅供参考。自然界里到处存在着天然背景辐射，哪怕只是在吃一根香蕉。
Mammogram检查的不同推荐:
At Mayo Clinic, doctors offer mammograms to women beginning at age 40 and continuing annually. When to begin mammogram screening and how often to repeat it is a personal decision.
Mayo Clinic recommends women and their doctors discuss the benefits, risks and limitations of mammograms and decide together what is best. Also consider your personal situation and preferences in making your decision.
Not all organizations agree on mammogram guidelines. For instance, the U.S. Preventive Services Task Force mammogram guidelines recommend women begin screening at age 50 and repeat the test every two years. The American Cancer Society and other organizations recommend screening begin at 40 and continue annually.
