He actually gave you a choice? Wow. I'm impressed by this doctor already.

My doctor had an MRI of my brain recently specifically to look for damage to the vestibular region of the brain. I think typically they are done to look for bleeding or more serious damage. They almost always come up negative for concussion. Actually, this is by definition I think -- concussions have negative scans. If something turned up, you have more than a concussion at the very least.