Leg Vibrations

Diagnosed with MG in 1989 and have had mild fluttering in my legs over the years. For the past year I have had very strong vibrations in my legs and my GP wants me to have an MRI for MS as he says vibrations are not a symptom of MG. (My brother had MS, and a lumbar puncture I had in 1988 was inconclusive). I do not want an MRI as am claustrophobic. Does anybody here with MG get vibrations, please?