Not quite that bad. These days a chest CT scan (~7 mSv) is worth about 70 chest x-rays (0.1 mSv). That's 2 years (CT) and 10 days (x-ray) of exposure to sea le

Not quite that bad. These days a chest CT scan (~7 mSv) is worth about 70 chest x-rays (0.1 mSv). That's 2 years (CT) and 10 days (x-ray) of exposure to sea level background radiation respectively.