I had an MVD with no clear compression on my MRI, but when they opened up my head they found 2 compressions. My surgeon said that he never made decisions on whether or not to do the surgery based on an MRI that showed no compressions. He did an extensive study on this and found that just because he couldn't find a compression on my MRI didn't mean I didn't have one. In my case 2! It would have given me a better peace of mind if I could see it on the MRI. My compressions obviously didn't show up.

Good luck to you!!