—”since neutron radiation can kill.”
And so can most other energy across the spectrum, given the dose.
You might want to bone up on fast neutron therapy.
Not new and not in the emergency room, and most hospitals do not have an MRI in the ER.
Fast Neutron Therapy
Fast neutron therapy is a specialized and very powerful form of external beam radiation therapy. It is often used to treat certain tumors that are radioresistant, meaning they are very difficult to kill using conventional X-ray radiation therapy. It has proven to be very effective at treating salivary gland tumors and certain forms of cancer, such as adenoid cystic carcinoma...
https://radiationoncology.uw.edu/radiation-treatment/treatment-options/neutron-beam-therapy/
Once the shell was removed, there was no medical need to determine whether or not it was live using x-rays or other imaging techniques. The bomb squad could just have destroyed the shell if they concluded that it might be live.
Sorry for my mistake. I should have read the article more carefully.