I had 3 closed MRIs last year; head and neck, lumbar, and upper spine. I am mildly claustrophobic, but you could still see out part way. I just did deep breathing. I did have Gandolin with the head and neck and was quite concerned because I AM allergic to IV contrast dye they use with CT scans. But I had no problems with the MRI.
I can get panicky, too in these situations, but I was determined not to take drugs for this. I went by myself and it was fine.
Robyn