I'm surprised that your doctors were so sure that an MRI would tell you "absolutely nothing." For the most part, my MRIs told me nothing*, but that "nothing" was comforting in itself. (*My cervical MRI revealed a "borderline" disk problem, but not one that called for right-away surgery, and not something that had bearing on my PN. I'll go back in the fall for another MRI to learn if that borderline problem is no longer borderline and requires surgery.) I'm no fan of MRIs! Who likes to spend 30-40 minutes in an oversized toothpaste tube anyway? LOL But my MRIs appear to have narrowed the suspects in my search for the cause of my PN (a cause I may never find).