Catherine,
The MRI was to see if there might be any other cause for the problem seeing as my primary symptom was vertigo. I have a friend who actually had the exact same thing happen to him about a month ago, but he wasn't diving. They did an MRI on him and found evidence of two prior mini-strokes and have since diagnosed his current episode on the same.
I don't think they will find evidence of any strokes, but that is the sort of thing they are looking for as well as any problems in my ears that might predispose me towards this type of hit. Again, I hope/think they won't find anything, but they want to rule it out and seeing as the DMO that is seeing me (2 of them currently) are all military ones with the Seal Delivery Vehicle Team (neither is the Bachelor).
They are going to audiology next week and they will be testing my ears externally.
I am also calling to set up my appointment with the Cardiology department next week. They are going to do an echogram on my heart to see if anything rears its head there as well.
I have also posed a supposition to my primary DMO as to a possible cause myself. He doesn't think that it could be, but also said he is not willing to rule it out. He is taking it to the team of DMOs he has been sharing this case with as to get their input as well.
As I get results back I will share them as can.
Thanks again to everybody.