https://www.google.com/search?q=contrast+MRI&gws_rd=ssl
https://www.google.com/search?q=CSF+...ion&gws_rd=ssl


They are probably checking for other conditions that might be causing your symptoms...

Other forums here have details on both procedures if you want more than the links provide.
use the search tool to find those.. http://neurotalk.psychcentral.com/search.php