Hi Kelly,
The Ontario Brain Injury Association
www.obia.ca might be able to help you explore your imaging options.
I think I'm with Mark on the fMRI. You really would be better off having a proper neuro-psych exam. The neuro-psych can reveal how your brain is really functioning and how that is playing itself out in your daily life. It is a useful tool when designing your cognitive therapy, coping strategies, etc...
Cheers