Actual reimbursement for an MRI is typically around 1000 bucks, that includes both technical and professional fees.
My insurance pays out about 6k for my yearly MRI... Although technically it is billed as 2 (brain+c-spine--rip off), so that is about 3k each. The billed amount is about 3500 higher.
When I was in a different hospital a few years ago I had a bill of 80k.. 80% of that was MRI and CAT scans. I was out of network, so they ended up paying the full non-discounted bill.