I know it's hard not to read your own scans when you have access to them. I do it all the time.. tee hee. Unfortunetely, I know too much for my own good from working with crossectional medical scans for years... I actually ended up being right for some stuff that were missed... that's a long angering story.arg.
Just try to wait till your appt and don't think about this too much. Like Karen said, you can always ask for a re-read by another radiologist.
2003 - T45, L???
2005 - T50, L31
bunch of measurements between...
2011 - T60, L32
2013 - T65, L?
Posterior Fusion T3 - L3