At what frequency should a Patient with MS have MRIs following their diagnosis? I have had RRMS for 4 1/2 years and my last MRI was done in June 2008. Since then I had a bout of optic neuritis in Dec 2008 and another MS flare in June 2011. I am on Copaxone since 2008. Should my neurologist be ordering a follow up MRI? Why or why not? Thank you!