hi steve
welcome to NT. i don't know the exact answer to your Q. what i could suggest is that you get a copy of the mri on a disc and a copy of the report. just go to the place where you had it done and sign a release. it's your legal right to get your records.

start to accumulate a medical file on yourself. it will come in handy as you travel the road to a dx (diagnosis) or it's ruled out. you also might want to consider getting a 2nd from an MS specialist. you could ask your local MS society for dr names (call 1-800-FIGHT MS) or google some names in your area. you can also google their rating on Healthgrades.com.

start to keep a brief sx (symptom) journal with your sx's and dates.
have you had any vision problems?

it can be a journey to get a dx of MS. it's a process of elimination. i'm wondering on your LP report....did you have any O-bands? a result of 2 or more could lean towards MS. you can google MacDonald Criteria. it's something neuros use to guide a dx to MS. see if you fit.

please stay in touch. you are your own best advocate so don't give up.