have to have magnetic 'pull' Although when they do screening CT scan of the eyes, of they see anything 'metallic' they don't take any chances and have to take precautions. I don't understand how they decide but some metal is OK if it has been in the tissues for a certain amount of time. Maybe it gets scarred in enough that it can't zing out, but I wouldn't want to take the chance.
I know titanium prosthetic parts (hips, knees) are fine. Pacemakers are a big no no (till they get MRI safe pacers soon) The rest, up to the radiology team.
