For example, you are worried that your fatigue is due to a brain tumor (google surely told you that), so you ask your doctor to do an MRI to rule it out. MRI co

For example, you are worried that your fatigue is due to a brain tumor (google surely told you that), so you ask your doctor to do an MRI to rule it out. MRI comes in negative. But the MRI radiation gave you cancer, because it does (in a very small amount of people), as well as gave you very expensive bill for it, because MRI are expensive everywhere, not only in the US. Good example, except you're thinking of a CT scan, not MRI. CT scan uses x-rays. MRI uses no ionizing radiation.