It was a knee MRI. She wasn't stuck inside it, she just wanted her husband to help get her off of the table instead of just the technician.

Still a horrible scene though, but not quite as horrific as your first imagining.

There probably wasn’t any screaming. MRIs exert thousands of pounds of force at close range. You can imagine what thousands of pounds of metal would do to a neck.

While you wrote an interesting narrative, if you read the article the story is nothing like this, and even from her point of view would have been nothing like this.

She had asked the nurse to call her husband to help her up from the table. She called out his name and he ran in while the machine was still going.

He was pulled into the machine and was freed eventually but suffered multiple heart attacks after being pulled off the machine. The heart attacks are what killed him in the end in a hospital bed far from the MRI machine. He definitely did not suffocate.

So tragic, jesus. Also, it was obviously stupid, but in his defense he probably went into fight or flight and wasn't thinking. Unfortunately he paid for it with his life.