Nanotechnology and drones are effective tools for field medical research.

Drones can carry X-Ray transmitters and receivers. The system can work that way that the 2-8 drones are flying around the target. The receiver must be on the opposite side of the target. That allows making X-ray research for natural animals without trapping them. 

Drones and artificial intelligence allows also make even PET scannings for insect-size natural animals without the need to trap them. And the same systems can also use for research on humans who might be injured. 

The fact is that nanotechnology and drones allow us to make even radiological research on the insect's nervous system and body in a natural environment. The system can be artificial intelligence-controlled drones that can have nanotechnology-based injectors. That injector injects things like the I-131 isotope into the insect's body. 

And then extremely small sensors can detect how the radioactive isotope travels in the insect's body. The system can use miniaturized sensor chips that are like dust. Those sensors can transmit data to the drone that flies near that insect. Or drones can have miniaturized telescopes that can detect the reactions of the isotopes in the insect's body.