Hi and welcome to the Forum.

Yes, tinnitus can result from brain injury. I've had it since my MVA in 2007. Don't panic. My injury was very severe. I was deaf in one ear for quite awhile and still loss hearing when my symptoms flair.

As far as I know, there is no "cure" for TBI induced ear ringing. It is a good sign that yours seems to be improving. Otherwise, it becomes a matter of learning to live with it, so it doesn't drive you bonkers. I use white noise.

Mark, another TBI patient, knows a lot about coping with tinnitus. He even used a piano to pinpoint the key in which his ears ring. Anyway, I'm pretty sure he'll see your post and weigh in with something helpful.

Your doctor is right about the MRI. Conventional MRIs are not sensitive enough to identify subtle - but significant - damage to the brain. If you want to know how you're doing, a neuro-psych exam is a better bet.

Hang in There