I have had two MRI's and it's just like Mari described Beth. I would take the klono, definitely, just to help stay relaxed. Be prepared fo it to hurt really bad when the test is done and you finally get to move again, take it slow and you should be just fine.
__________________
I love my family, my friends, (this means YOU!) my cat, my nails, my Necchi sewing machine and my turtle!
.