My NS has scheduled a double MRI for me next Wednesday -- the first will be a normal one, and the second one with dye injected in my vein via IV. On the prior MRI that was done last August before my surgery, it apparently showed not only the herniated disk at L5-S1 (that a MicroD was done on), but also a protrusion at L4-L5, which the NS didn't tell me about. They think that one may be what is causing me pain now. It also had a tear.
What can I expect from the MRIs? Any side effects from the dye? Also, is it possible to have a microD on two levels, or will the back be too unstable?