Why isn’t it a standard practice to use metal detectors and smaller magnets on a patient before putting them in an MRI machine?

Question

Especially if a patient is not lucid, wouldn’t it make sense to, firstly, check with a metal detector if there is anything metal inside, then use a small magnet to see if that something would cause problems, and only then put the patient inside the MRI machine? I guess there must be a good reason not to do that routinely, right?

In: Physics

Answer 1

ELI5: Why don’t they use metal detectors before an MRI scan?
byu/supergnawer inexplainlikeimfive