I have had several MRI's of my head & lesions have never been found - so far anyway! They even were nice enough to let me know that there actually
was a brain in there though!!!
I did also have a SPECT scan done, and it showed that I have significant reduced blood flow in two areas of my brain. I found something a few months ago that explained that the areas where there is reduced blood flow will directly relate to what kind of symptoms you are having. I'll have to see if I can located that site again!!