Sure.
NEST teams are alerted when Neutron detectors or other radiation detectors are set off. If it's some other detector, the energy level ahs to be above a certain level for a NEST team to be necessary, rather than another HAZMAT type response team.
What we commonly might see in hospitals for Nuc Med would not set off a Neutron detector. Only Plutonium and other elements that meet a certain energy levels (which I will NOT specify..."Loose Lips" y'know) will be seen by a Neutron detector due to it's method of screening out Protons vs Neutrons, as well as energy levels.
Anybody remember shorty after 9/11 there was a NEST team sent to a ship off the coast of New Jersey? The story afterward was that it had "Glazed Tiles" from Mexico on board, which have Uranium Oxide in the glaze.
I call 
.
While the tiles ARE radioactive, and a Ludlum will hit on them...there is NO WAY a Neutron Detector got a hit on them! 100% false. Maybe the tiles were there to confuse the issue, but there would have had to be Plutonium or "Other elements" there for the NEST team to be dispatched! And there was NO NEWS for days afterward.
Just look here for more info on the new Portable Neutron Detectors if you don't believe me.
NEST is VERY specific as to their threat response, and when they are called in.
I'm intentionally being a bit vague, but what I have said is valid, and available info from published sources, so I'm not giving out info.
Does this help?