My Neuro ordered the test, with no dye contrast. I'm not sure what he is looking for, but he said something about C4 & C5. Aslo said that if nothing showed up there he wanted to do a brain scan (won't find anything there- LOL!!) I'm not sure what all this test shows, or what he is looking for, I guess other than damage or blockage of the spinal cord. Has anyone else had this done?? What did they find? I started to get terrible headaches when I exercise that start at the base of my skull and radiate over my head, and make me feel sick for days afterward. I think that's why he is starting with this. I also read that the Babinski reflex makes them look here.