Here is a better link, the one you posted doesn't show anything. I found this by searching for jeWel41:
http://www.frappr.com/?a=myphotos&id=4872740It's really hard to say, given that you don't have all the pics, and they are without contrast. It is tempting to latch onto to the first bright blob you spot on the right side of a picture (the left side of your head). But without contrast, the AN is not expected to light up, so that can be misleading.
Also the MRI's are not shot at perfect right angles, so the two sides often look different. When the pics are on a CD, you can scroll forwards and backwards through the head, and see that a blob on one side shows up on the other side two frames later. There are a couple of shots with quite normal looking IACs (the canal where the AN typically starts), but again, two frames higher or lower might show something different.
So I will give you a definite maybe, maybe not.
A doctor telling you that you have SSHL doesn't say much - if you wake up deaf one day, you pretty much already know that you have had sudden hearing loss. I hope you get your London appointment, and get to the bottom of this soon.
Steve