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At least you get to keep your shoes on.

Radiation exposure Body scanner: 0.01 mrem Mammogram: 30 mrem Chest X-ray: 10 mrem CT Scan (head and body): 1100 mrem Dental X-ray: 10 mrem Using natural gas in home: 9 mrem/year Air travel per 1,600 km: 1 mrem Flight from Vancouver to Halifax (approximately 4,443 km): 2.78 mrem Luggage scanner: 0.002 So says the TSA


At least you get to keep your shoes on.