- Getting a CT scan gives a patient as much radiation as 100 to 800 chest X-rays.
- Getting a nuclear medicine study exposes a patient to as much radiation as 10 to 2,050 chest X-rays.
- Getting a fluoroscopic procedure exposes a patient to as much radiation as 250 to 3,500 chest X-rays.
Moreover, doctors may prescribe scans that aren’t medically justified. And since risk from radiation exposure accumulates over a lifetime, certain scans may not be appropriate for people who’ve already had a lot of scans.