Now that neurologists have discovered that perfusion MRI's (p-MRI's) are more sensitive to detecting Behcet's neurological involvement in the brain, fewer specialists will rely on regular MRI's alone to say a patient doesn't have evidence of neuro-BD.
In this 2012 study, many Behcet's patients with negative MRI's showed silent neurological involvement when p-MRI's were used. Using p-MRI's could also prove why many Behcet's patients have frequent, severe headaches and mild cognitive (thinking, memory) problems even though their other neuro tests come back normal.
If you want to see the p-MRI color photos of Behcet's neuro involvement, go this this webstie and click on "Full Test PDF" in the upper right.
Back when I was having significant Behcet's CNS symptoms, I remember one pompous neurologist who pointed at a normal MRI of my brain and told me, "The pictures don't lie. Nothing's wrong with you." I was so mad at him because I knew something was very wrong and that I wasn't imagining it.
Now we know that pictures DO lie if you're not using a test sensitive enough to find the problem.