I think the chiropractor question should result in a view of the hospital bylaws. If they are allowed to order the test, and you guys provide that service for the hospital, you are unfortunately not in a good position to refuse. Whether you get paid or not is a different question. If they are allowed to order the test but the insurance company won't reimburse because a chiropractor ordered the MRI, you may want to try having the radiologist document the failed MRI attempt and his/her rec that you guys be present.
JWK, we tried that approach a few years ago with our hospital, gave the all our demands for a MRI compat machine, syringe pumps, monitors etc. Unfortunatetly they bought everything we asked for. We do lots of kids which I don't mind. The closest children's hospital is 3 hrs away. The adults get to me. At least you can justify a kid not being able to be still for 45 minutes. The adults, I just want to tell them to be still or not have the study. We don't make jack from MRI's, all the kids are medicaid and so are most of the adults. The question came up not to long ago as to whether we would continue the service. My personal opinion is that we are the only hospital in the area that offers this service, parents would have to drive 3 hours for an MRI if we didn't. As long as we break even on them we will continue doing them. We will see what happens in the future.