Spine MRI Guide: What It Shows, Why, and How It Works
Updated: 4 days ago
A spine MRI is a painless scan that makes detailed pictures of the bones, discs, nerves, and spinal cord in your neck and back. Doctors often order one to look for problems like a herniated disc, spinal stenosis, or an injury after an accident. It uses a strong magnet and radio waves, not radiation.
This guide explains what a spine MRI is, why doctors order one, the different types, how to prepare, and what happens during and after the scan.
What is a spine MRI?
MRI stands for magnetic resonance imaging. A spine MRI uses a strong magnetic field, radio waves, and a computer to create detailed images of your spine. Unlike X-rays and CT scans, it does not use ionizing radiation.
An X-ray mainly shows bone. A spine MRI shows bone and soft tissue, including:
The vertebrae, the bones that stack to form your spine
The discs, the soft cushions between the vertebrae
The spinal cord and the nerve roots that branch out from it
Ligaments, muscles, and joints around the spine
Why do doctors order a spine MRI?
Your doctor may order a spine MRI to look for the cause of back or neck pain, numbness, tingling, or weakness. Common reasons include:
Disc problems: herniated, bulging, or worn-down discs
Spinal stenosis: narrowing of the spinal canal that can press on nerves
Nerve pressure: pain, numbness, or weakness that travels down an arm or leg, sometimes called radiculopathy or sciatica
Injuries: checking for damage after a fall, sports injury, or car accident
Fractures: including fractures in people with weak bones from osteoporosis
Slipped vertebra: a condition called spondylolisthesis, where one bone slips forward over the one below
Arthritis: wear-and-tear changes and inflammatory types of arthritis that affect the spine
Infections and tumors: finding and looking closely at these less common problems
Surgery planning: giving a surgeon a detailed view before or after a procedure
Many cases of back pain get better on their own and don't need an MRI right away. To learn more, read do you need an MRI for back pain? Only your doctor can decide whether you need a scan.
Get medical care right away if back pain comes with loss of bladder or bowel control, numbness in the groin area, sudden leg weakness, or a fever.
Types of spine MRI
Your doctor will order a scan of the part of the spine that matches your symptoms.
Type | Area | Often used to look for |
Cervical MRI | Neck | Herniated discs in the neck, stenosis, and arm pain or numbness |
Thoracic MRI | Mid-back | Mid-back pain, fractures, infections, or tumors |
Lumbar MRI | Lower back | Lower back pain, disc herniation, and sciatica |
Sometimes more than one area is scanned during the same visit.
How to prepare for a spine MRI
Preparation is simple, but it matters for your safety:
Remove all metal, including jewelry, watches, hairpins, and belts
Wear comfortable clothes with no metal, or change into a gown if asked
Tell the team about any implants, devices, or past surgeries, such as a pacemaker or spinal hardware
Tell the team about the medicines you take
Tell the team if you are pregnant or could be pregnant
Ask your doctor whether your scan will use contrast dye
The MRI magnet is very strong, so the team will go over a safety form with you before your scan.
About contrast dye
Some spine MRIs use a contrast agent called gadolinium. It is given through a small IV and helps certain tissues show up more clearly. Allergic reactions are rare. If you have kidney problems or have had a reaction to contrast before, tell your doctor and the MRI team.
What happens during a spine MRI
Here's what to expect:
You lie on a padded table, usually on your back.
The table slides into the scanner.
The technologist steps into the next room but can see and talk with you the whole time.
The scanner takes a series of pictures. You'll hear loud tapping or thumping sounds, so you'll get earplugs or headphones.
You stay as still as possible so the images are clear.
The scan itself is painless. If lying still is hard because of pain, tell the technologist. They may be able to help you get more comfortable with pads or pillows.
If you feel nervous
Feeling anxious in the scanner is common. Talk with your doctor ahead of time if you have claustrophobia. You can also read our tips for handling claustrophobia during an MRI.
After your spine MRI
Most people can go back to their normal activities right away. There is no recovery time unless you were given medicine to help you relax.
A board-certified radiologist reviews each image slice. They look for anything unusual and compare with your past scans when those are available. Then they write a report for your doctor. At Millenium MRI, results are usually sent to the referring doctor within 24 hours. Your doctor will go over the results with you and explain next steps.
Understanding your report
Spine MRI reports use many medical terms, such as "disc bulge," "foramen," or "stenosis." Our guide to understanding spine MRI terms explains these in plain language. You can also read our tips on how to read your radiology report.
Benefits and limits of a spine MRI
Benefits
Shows discs, nerves, and the spinal cord in great detail
Uses no ionizing radiation
Painless and noninvasive, with no incisions
Limits
Some metal implants and devices are not safe in the MRI
It takes longer than an X-ray or CT scan, and you need to lie still
It often costs more than other imaging tests
MRI can show changes that are common with age and may not be causing your pain, so your doctor matches the results with your symptoms and exam
Spine MRI after a car accident
Neck and back injuries are common after car accidents. Some injuries to discs, ligaments, and nerves don't show up on an X-ray. If your doctor thinks you may have a spinal injury, a spine MRI can give a more detailed look. Learn more in our article on spinal injuries in car accidents. If you have questions about an insurance claim or lawsuit, talk with an attorney.
Frequently asked questions
Does a spine MRI hurt?
No. The scan is painless. The hardest parts for most people are the noise and lying still.
Can a spine MRI show a herniated disc?
Yes. MRI can show herniated and bulging discs and whether they are pressing on nerves or the spinal cord.
Is a spine MRI better than an X-ray?
They show different things. X-rays are good for bones and alignment. MRI shows discs, nerves, and soft tissue in much more detail. Your doctor will choose the right test.
Can I get a spine MRI if I have metal in my back?
Many spinal implants are safe for MRI, but some devices are not. Always tell the team about any implant or surgery so they can check before your scan.
Do I need a doctor's order for a spine MRI?
If you're using insurance, yes. Your doctor's order tells the imaging team which body part to scan and why. If you pay cash (self-pay), no referral is needed at Millenium MRI, and you can call and book directly.
Related reading
Schedule an MRI at Millenium MRI
Millenium MRI has centers in Ocala, Largo, and Tamarac, Florida, and in Jonesboro, Marion, North Little Rock, and Springdale, Arkansas. Our board-certified radiologists and ARRT-certified technologists focus on clear images and a comfortable visit. Same-day appointments are often available, and most patients are in and out in about 35 minutes. We accept most insurance plans, workers' compensation, personal injury cases, and self-pay. Our centers are open Monday through Friday, 9am to 5pm. Call your nearest center or request an appointment online.
This article is for general information and is not medical advice. Talk with your doctor about your specific situation.
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