This Is MS Multiple Sclerosis Knowledge & Support Community

Thanks for the replies. I do understand why contrast dye is used, i.e. to differentiate new lesions from old ones. My question is, then, why do an MRI without the dye, (unless it is your first one)?

I was diagnosed with MS four years ago. I had two MRIs prior to being diagnosed. The first one was of the brain only. No contrast dye was used. The second MRI was of the brain and spine, and I had an IV of dye the whole time I was in the "tube". I was told that all subsequent MRI's for MS ...