Should my thyroid be shielded when I have a mammogram?
- This issue received media attention when Dr. Oz highlighted a study showing a significant increase in thyroid cancer in the U.S. since 1998, and he theorized that this is due to radiation exposure to the thyroid gland during annual mammography. It is highly unlikely that mammography can be blamed for this increased incidence, as it seen in both women AND men, and men do not receive screening mammograms. A recent paper estimated that the lifetime risk for thyroid cancer
What is the radiation dose of a mammogram? Is it dangerous?
- For digital mammography, the average radiation dose from a standard 4-view mammogram of both breasts is 3.7mGy; for film-screen mammography (not digital), the average dose is 4.7mGy. Data suggests that if there is any risk for developing breast cancer because of screening mammography, it is extremely small. In the Swedish Two County Trial, over 100,000 women have had repeated mammograms since the 1970’s, and the screened group has no more cancers than the
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