Okay, I'm not claustrophobic, but I have to admit, I felt a bit like the filling inside an eclair when I got my round of MRIs and various brain scans last summer. It kind of depends on how claustrophobic you are and how much of you they plan on stuffing inside the tube...I mean, they didn't stick my entire body inside this thing; they were just scanning my head so a lot of me was hanging out in the room, while I listened to the radio. But if you think it's going to be a problem, a lot of places have access to open MRI facilities, and it's not so...enclosing.
JD
