Is it safe for a pregnant woman to go through a full body scanner at the airport?

For me, I will avoid it although the custom officers and internet mentioned the radiation is minimal and not harmful. What I do is, I will inform the officer that I am pregnant and I do not want to go through the scanner. They will let me walk through another path and let female officer do a full body search and check on me. So far, I have no problems doing this at airports.