How do different sources of radiation compare? continued...
You may be exposed to more radiation than other people if you:
Live at high altitude.
Have certain medical tests (such as X-rays or CT scans) or treatments (such as radiation treatment for cancer).
Are exposed to radon gas in your home.
To understand more about radiation exposure, you may find it helpful to compare some common sources of radiation to a standard dose from a chest X-ray. A chest X-ray gives off very small amounts of radiation.
You would need to go through a full-body airport scanner about 1,000 times to get the same amount of radiation that you would get from 1 chest X-ray.
A 10-hour plane flight is about the same exposure as 1 chest X-ray.
One mammogram test is about the same as 5 chest X-rays.
Living at high altitude (such as in Denver) for a year is about the same as having 5 chest X-rays.
One CT scan is about the same as 200 chest X-rays.