Wonderful, Luna, just WONDERFUL. You're taking a giant step
But when you take it, dont hesitate for one minute to THINK OF YOURSELF FIRST.
Tell the MRI people about your fear and claustrophobia ... make certain they know. (But I bet they ask you first ) Don't try to "act" brave or anything like that. Remember they asked you about claustrophobia. It's a common fear with MRIs.
Since it's a center devoted to MRIs it's very possible they have an "open" machine.
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But the most important thing will still be happening long after you leave that machine, right? It's possible you'll be dealing with TLE and that sure takes longer We're wishing you well.