I had cervical and spine done a few years ago. It scared me at first but I did great. They put on a device (I had to lie flat and really still) and this device turns you all different ways while they are watching the images and I believe there was an injection that you could not move while it was being injected. The people were great and there was a person on each side of me telling me what to do. I had to have this done before back surgery. It shouldn't bother you at all - it is just the unknown that is troublesome to everyone. If the hospital is used to doing this a lot you shouldn't have any problems. You may want someone to come with you and drive you home. Good luck.