What my MS center likes to do is compare the new MRI to the old MRI, and then based on the pattern of old lesion load, vs the pattern of new lesion load they make a determination on what to do, and how best to handle it.
Clear as mud?
I am surprised they went 8 years with no MRI study on you.
I hope they are able to pull your old records from the archieves and give you some clarity.
NEVER let the MD rush you. Firmly plant your behind in that chair, have your list of questions at the ready, and when he says something that confuses or upsets you, say...Can you please explain what that means? I dont care if it takes all day. You deserve answers and clarity.
Good luck.