MRI MS lesions | Multiple Sclerosis News Today | illustration of person undergoing an MRI scan

MRI and MS Diagnosis

Last updated Aug. 30, 2022, by Marisa Wexler, MS

Fact-checked by Patricia Silva, PhD

An MRI is the preferred imaging tool to assess damage in the brain and spinal cord that results from MS

FAQs about MS brain MRI

The MRI itself usually lasts 15 to 90 minutes, depending on the specific type(s) of scan being used and which part(s) of the body may be imaged. Typically, multiple images are acquired. These images are interpreted by a radiologist, and the results are shared with the primary healthcare team and communicated to the patient. This process commonly takes a week or two, though turnaround times vary from clinic to clinic. It’s advised patients ask their healthcare providers when to expect results from MRI scans.

Contrast agents like gadolinium are typically used to detect areas of active multiple sclerosis (MS) driving inflammation on MRI scans. However, contrast agents are not needed for scans that detect any MS lesions (actively inflamed or not), so it is possible to diagnose MS without the use of these agents. It is generally recommended that, when feasible, patients should undergo scans both with and without contrast. This will help to facilitate an MS diagnosis, or not, as quickly as possible.

MRI scans of the cervical or lumbar spine — the neck and lower regions of the spinal cord, respectively — may be useful for detecting multiple sclerosis (MS) lesions in those regions. To receive a formal diagnosis of MS, a person must show evidence of lesions in at least two of four parts of the central nervous system, which include three brain regions and the spine. As such, an MRI of the spine may be useful in the diagnostic workup, but a spinal MRI alone cannot be used to diagnose MS on its own.

MRI is the gold standard for detecting and monitoring the lesions that result from myelin loss in the nervous system and define multiple sclerosis (MS). While an MRI is almost always a critical part of the diagnostic evaluation, MRIs alone are not enough to confirm the diagnosis — other tests are needed to confirm that MS-like inflammation is the cause of the damage, and to rule out other conditions that may mimic MS.

It is generally recommended people with multiple sclerosis (MS) should undergo routine MRI monitoring every six months to two years. Specific monitoring schedules are tailored to the individual patient based on factors like treatment regimens and rates of disease activity.

Multiple Sclerosis News Today is strictly a news and information website about the disease. It does not provide medical advice, diagnosis, or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.

Related Articles



Envelope icon

Subscribe to our newsletter

Get regular updates to your inbox.