Regarding scanner x-rays, the luggage equipment leaks radiation machines have been found out of calibration or with shielding missing. Additionally, scanners are open to the room to the area scattering x-rays in all directions. The security area is radioactive should be avoided by people in general children, expecting mothers and people with the BRCA (breast cancer) gene, in particular.
Claims that the x-rays don't penetrate are just false, simple inspection of the bone shadows confirms this. The machines use 50-120KVp x-rays same as dental and CT-scanners. The skin dose is 10-50x greater (depending on image resolution) than what is published. This is a risk news for fathers, children and mothers.
Learn more about radiation how the scanners work and protection options. We have a free presidential report on ionizing radiation and pregnancy. Congratulations! Hope this help you. Jeff