Entire-body PET Scans for Multiple Sclerosis

To evaluate whether an entire-body positron emission tomography (PET) scanner can be exploited to improve evaluation, monitoring and measurement of both peripheral and central demyelination in multiple sclerosis (MS) patients.

Inclusion Criteria: * Multiple sclerosis (MS) patients diagnosed by a credentialed neurologist experienced with care of multiple sclerosis patients. * Normal healthy subjects. * Willing and able to lie motionless on the PET-CT scanner bed for at least 10 minutes and up to 20 minutes for the duration of the PET-CT medical imaging scan. Exclusion Criteria: * Any additional complicating medical illness other than MS including any other neuropsychiatric illness unrelated to MS diagnosed prior to the onset of initial symptoms of MS. * Pregnancy or breast feeding. * Diabetes or other metabolic-endocrine disorders. * Any known concomitant acute infection. * History of metastatic or locally invasive cancer. * Recent surgery, chemotherapy or radiation therapy.