The security video was released of the MRI incident. The MRI technician can be seen opening the door to the area they say the husband was not allowed to be in. The tech then called for the husband to come in and help his wife. So, any excuses about the husband being where he shouldn't be are negated by the technician's actions.
Additionally, there is an Emergency Shut-Off button on the machine which the technician didn't press. Pressing it would have in all likelihood saved the man's life. Instead, the daughter says it took AN HOUR to free him from the machine.

I foresee a sizable settlement check in the widow's future.
https://youtube.com/shorts/0MWscnlw_WoAccording to The Sun, the daughter started a GoFundMe to pay for her father's funeral. In that post, she added details of the accident:
In a GoFundMe set up for burial costs, Keith's daughter Samantha Bodden
revealed new details about her dad's horrific accident, which took place when
his wife was at Nassau Open MRI in Westbury for a scan of her knee.
She wrote: "While my mother was laying on the table, the technician left the
room to get her husband to help her off the table.
"He forgot to inform him to take the chain he was wearing from around his neck
off when the magnet sucked him in.
"My mother and the tech tried for several minutes to release him before the
police were called.
"He was attached to the machine for almost an hour before they could release
the chain from the machine."
The grieving daughter went on to explain that Keith suffered several heart attacks
following the incident.
She added that, though media reports have claimed Keith wasn't authorised to be
in the room, it was the technician who brought him in.
Keith’s wife Adrienne Jones-McAllister previously told News 12 Long Island that
she asked the technician to bring her husband in to help her get up from the table.
https://www.the-sun.com/news/14782740/husband-killed-mri-machine-chain/Another wrinkle: this is not the couple's first visit to this MRI facility. In previous trips, the technician had "mentioned" the heavy chain around his neck. That's according to the wife. Not sure what she meant by "mentioned." However, if you want to argue the husband knew not to wear that chain in the MRI room, you could just as easily argue that the technician was aware the husband was wearing that chain during previous visits and should have had him remove it before entering.
Something tells me that technician is going to be the facility's scapegoat, but in the end, they are responsible for the negligent acts of their technician.