At least you get to keep your shoes on.

Radiation exposure

Body scanner: 0.01 mremMammogram: 30 mremChest X-ray: 10 mremCT Scan (head and body): 1100 mremDental X-ray: 10 mremUsing natural gas in home: 9 mrem/yearAir travel per 1,600 km: 1 mremFlight from Vancouver to Halifax (approximately 4,443 km): 2.78 mremLuggage scanner: 0.002

So says the TSA