You rolled your ankle on a curb two days ago and it is still swollen. Or the ache under your forefoot has been there for six weeks and nothing has explained it. Either way you are wondering the same thing: should somebody take a picture of this, and if so, which kind, and what is it going to cost?
Choosing between an X-ray or MRI for foot pain is not really a patient decision, but understanding how the choice gets made is useful, because it tells you what to expect at the visit and what to ask about before anything is ordered. Here is what each study shows, when imaging gets skipped entirely, and what the money side looks like.