I don't mind the whole MRI thing but the worst bit about mine was being told I couldn't/shouldn't swallow for the next few minutes. I had been nodding off, then the voice came over and said 'ok, don't swallow now until I say...'.
Well do you think that helped my 'not to swallow' state of mind???!! I think I had to swallow every 10 seconds AFTER she said Not to!