If you receive an MRI, with or without contrast, and you have parasites or cysts in your brain, the neurologist WILL see it. If they do not see anything, You Dont Have parasites in your brain.
Ive got reason to worry, because i have no received an MRI yet.
Dont stress yourselves out. Those creepy crawling feelings will only occur if you think they occur. Do a cleanse, get your blood screened, and trust the people that specialize in finding things in your brain.
Im freakin' out right now, about Things in my brain, and i have reason to worry. I need to just calm the heck down.