Jamie and Her MRI

Jamie, my dear wife, is having her MRI today to determine the next step in treating some atypical cells found during her last mammogram. We do know that the cells are not cancer, but are something that needs to be treated. I will update this later today, to let you know the results. Has anyone ever had an MRI? I never had, but I have heard they are uncomfortable, especially if you are afraid of being in tight spaces.