Why don’t they have metal detectors before you get to the MRI? The person with the gun died, however it would be a lot less stress to the mother, and the medic

Why don’t they have metal detectors before you get to the MRI? The person with the gun died, however it would be a lot less stress to the mother, and the medical staff if this hadn’t happened. It is a bit flimsy to say he had declared this, some people might just have a mental block. A metal detector should ensure that there’s no confusion. I’m guessing whilst a solution, it might not be feasible to get the clearance funding, and ongoing maintenance of such a device.