I have a Titan installed in my middle finger. I went and got an MRI done. It was totally fine. There wasn’t even much pain as long as you weren’t waving your hand around. I didn’t even need a tight bandage or anything. Just stay still and stay calm.
My measurements (while not perfect) indicate no loss in field strength after being exposed to the 1.5 Tesla field for 35 minutes. Some MRI are 3 Tesla, but it’s a linearly scaling unit of measurement, so I’m confident that even double the field strength would have no chance of tearing the magnet out of my finger. MRI above 3 Tesla are mostly for research purposes, so you shouldn’t encounter them in a healthcare situation. Personally I would even be willing to go in one of those, but YMMV.
The target was the head, which I mentioned in the video. I did stick my whole hand in the center of the torus before they pulled me out, which was very uncomfortable, but mostly because it was flipping in the pocket. There wasn’t enough force to pull the magnet from my finger. The intention was more to show that under normal circumstances this isn’t a huge issue. Maybe under the worst of conditions it would be bad, and if you’re concerned about that just get your magnet removed.
A few more experienced grinders have told me they did it and it was fine. I wanted to see it for myself, and provide some data that it wasn’t “damaging” the magnet in the process. I wish I could have provided some irrefutable evidence, but you’re just going to have to trust me. There’s literally nothing I can do in a zero trust situation to prove it happened, because video can be edited.
I’ve talked with an MRI technician/implantee and he mentioned that the risk isn’t really the magnets moving/ripping the skin but them distorting the image which renders the hole process useless. He sent me an image of metal implants on an MRI to illustrate [edit: turns out not to be an MRI, the idea is the same though].
You can see the artefacts on there due to the metal in the scanned area.
That image is a really excellent share! This is why I removed my tragus magnet before the procedure. Even if I could have been safe, and somehow got it past the tech, it still would have ruined the results of a head MRI.