A normal MRI
is reassuring. (But it is MRA - MRI angiography
- that shows blood vessels / it was likely done in the same sitting...).
Hopefully, ECG, blood pressure, blood counts and other investigations have been done and are normal?
The body's balancing mechanism is in the inner ear
. An ENT (Ear Nose Throat) specialist is the one to see - especially in the presence of tinnitus
. They have special tests to confirm or exclude the contribution of the ear - which probably is the case with you.
Wishing you speedy recovery