I have been offered an mri of my heart as part of some research due to me having an inflammatory auto immune condition. I would be interested in understanding my heart health but I am quite claustrophobic. As it is for research purposes, they would not offer any sedation. Does anyone have any experiences they could share about how bad it actually is? I wouldn't mind the noise it's just not being able to see an open room. How close to your face is the roof of the tube? Thanks!