While I don't fully understand your MRI, I totally understand your frustration. While I have suffered from severe migraines, one in which was severe enough to cause a TIA ("min-stroke)-I have experienced the same thing - right sided weaknesses, slurring of speech, confusion at times, severe leg pains as well as muscle spasms in addition to hearing noises at night and at times, it has been difficult to swallow. I could go on with the list which totally matches the signs and symptoms of MS. I have had several brain MRIs which have at one time or another indicated the dyleminating process but never told I ACTUALLY had MS. I am now waiting for my Spinal MRI to come back - playing telephone tag with a MS Specialist who I sought for help on my own! My neurologist, in my opinion, has been "worthless" to say the least - never getting a straight answer. Have you heard back from anyone regarding your question? I would be eager to find out.
Hopefully by now you have figured out your circumstances. But, for the future, anyone interested in trying to figure out what their MRI means can always look at this site, which is an educational site and absolutely terrific!