Some of these negative accounts are really not helpful. What is apparent is that experiences of MRIs vary VERY widely, ( or even wildly)! which may be be partly because of the specific purpose of each MRI, and partly depending on where the MRI is being done.
For example, i had an MRI just before Christmas, and had dye injected into a cannula, but nobody told me about how long it would stay in my body - and it had no effect on me whatsoever. For all I know it might still be in my body!!
The length of time it takes varies widely too. Mine took about 20 - 25minutes. Although my body was mostly in a tube, my head wasn't and I could see the end of the tube and what was beyond.
I'm sure that MRI staff are well aware of some patients' fears and will be prepared to make the experience as bearable as possible.
Just remember - this is a step to discovering what treatment is needed to get rid of your symptoms and make you better. A VERY positive procedure.
And just to ( hopefully) make you laugh, i had this MRI when in hospital after a gamut of scans, ultrasounds , and Xrays, I was there for 3 weeks and one day I was told that I was going for an ultrasound to look at my heart. I was puzzled becasue I thought I'd already had one. I was pushed in a wheelchair along miles of corridors and ended up in a large wooden shed, where it transpired that I was actually going to have a very different sort of test. I now know its called an endoscopy., where a camera is pushed down your throat to have a look at internal organs. I survived, and am rather glad that I didn't know what they were going to do until the last minute. I really don;t know whether someone lied deliberately about the test, or just made a mistake.
Don't worry - I'm sure you have something in writing that spells out exactly what is happening and you will be fine.