Hi Derika,
I had my surgery at U of M on May 29. The CT scan was to see the placement of blood vessels inside your head which can Ted them during surgery. My CT scan showed I had a high jugular bulb, which makes it a little harder to get to the IAC. I guess they want to know before they get into surgery so they can be prepared.
While the tests give them information, I think they do the whole battery of tests so they can use your results in research publications. If they re running some kind of statistical analysis - how many patients with x result on the balance testing have y happen in surgery - they have the data. I mean, if you're getting Translab, what difference does it make how well the auditory nerve is sending signals to the brain?
Good luck with your surgery. I had Translab 8 week ago and am back to normal activity. I had no facial nerve issues. With the vestibular exercises, my balance is great - I've been riding my bike, jogging, and playing tennis. The single side deaf thing is weird, but if that's the worst of having this kind of surgery...
Feel free to contact me if you have any questions.
Rachel