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How can MRIs be used to monitor and diagnose multiple sclerosis (MS)?

Magnetic resonance imaging (MRI) can be a very useful tool in diagnosing and monitoring multiple sclerosis (MS). New MS lesions will typically "enhance" with dye for about six weeks. MS lesions older than six weeks or so will no longer enhance, but will still leave behind a bright white area on certain MRI images. The typical person with relapsing-remitting MS who is not on any treatment will have an enhancing lesion on brain MRI about 50 percent of the time.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.