Reading more about the story I wonder how much of it is true

You can't just "walk into an MRI room", for one

When the MRI is working you definitely can't just walk in. Nobody is in there because of the radiation, so i doubt they just have an open door policy

Then, when there is an emergency like, you know, someone being strangled with a 9kg necklace on his neck by the machine's magnetism, you can press the kill switch that will quench the magnet by venting out all cooling liquid. This will damage the machine and is also a very expensive little joke, but it would save the life of that guy. Why didn't they do that?

It's a similar story to the guy that went into an MRI with a gun, causing it to fire and kill the guy.

Okay 3 things.

1. 9 kg is 2.2 lb, which is ridiculous, and can't be good on your neck. The article says 20 lb, so one of those is wrong. I'm gonna guess the metric one is writing since in America we measure everything in Freedom Units™

2. Did the "no metal" warning sign go missing or was he just illiterate?

3. That must have been a horrible mess to have to clean up.