If you are pregnant and have concerns about the security scanner at the airport, it is best to speak with your doctor before your trip. While there is no definitive answer, as each pregnancy is different, most experts agree that the scanners pose no risk to you or your baby. In fact, the scanners use low-level X-rays that are similar to those used in a dental X-ray. However, if you are still concerned, many airports now offer alternative screening options, such as a pat-down search.