A guess? I say no new ones, but old ones may be active. Like the other inside of the Optic nerve may light up and be bright. No money on my bet either.

I really hope your MRI's look good with no new or old activity. Didn't you just have steroids? Or did I mix you up with someone else?
IVIG is blood donated from about, I think, 100 people. It is concentrated and purified or course. It is tested over and over and sterilized for patient use. It is infused,
your poor veins.
It helps rid the body of certain germs, perhaps dormant ones, that have been activated. It also mixes with your anti-bodies so the body will stop attacking itself. That's all I remember, others here must have used IVIG before. I have not. I wish you luck with the next MRI and I hope you feel better soon.