Updated November 1, 2026 · By the MRIScanNearMe.com Team
Quick answer: A lumbar spine MRI usually takes 30 to 60 minutes, though some exams can take up to 2 hours, according to Kaiser Permanente. You lie still on the scanner table while the scanner makes tapping and thumping sounds. The scan is painless, most people need little preparation, and you can usually go home and return to normal activities right away.
If your doctor has ordered an MRI of your lower back, it's normal to wonder how long you'll be in the scanner, what it will feel like, and whether you need to do anything beforehand. This guide walks through the lumbar spine MRI step by step, using information from radiology and health system sources, so you can walk in knowing what to expect.
How long does a lumbar spine MRI take?
Most lumbar spine MRIs take 30 to 60 minutes, and some can take as long as 2 hours, according to Kaiser Permanente. Ask the imaging center how long your specific exam is expected to take.
Plan for extra time at the imaging center as well. You'll check in, let the staff know about any metal or implants, and may change into a gown. If you're comparing locations, our MRI scan directory lists imaging centers by state and city so you can find one close to home or work.
What happens during a lower back MRI?
You lie on a table that slides into the scanner, and your main job is to stay as still as possible. The RadiologyInfo.org patient guide from the American College of Radiology and the Radiological Society of North America explains that clear images depend on lying completely still, which can be harder if you're anxious or in significant pain.
Here's what people commonly notice inside the scanner, based on Kaiser Permanente's patient guide:
- Noise: tapping, thumping or snapping sounds, plus a fan and moving air. Earplugs or headphones may be offered.
- Sensations: the magnetic field and radio waves don't cause pain. Some people feel warmth in the area being scanned, which is normal.
- Stiffness: lying in one position for a long time can leave you tired or a little sore.
If lying flat is uncomfortable because of back pain, tell the technologist before the scan starts. They can help you get as comfortable as possible before the images start.
How do I prepare for a lumbar spine MRI?
For most people, preparation is simple: wear comfortable clothes, leave jewelry at home and tell the staff about any metal or implanted devices. RadiologyInfo.org notes that guidelines about eating and drinking vary between facilities, so check with yours, and that you should keep taking your usual medications unless you're told otherwise.
A few points worth sharing with your doctor and the imaging team ahead of time:
- Implants and metal: tell the technologist about any implanted device or metal in your body. RadiologyInfo.org notes that most orthopedic implants pose no risk.
- Pregnancy, allergies and recent surgeries: mention these when you schedule.
- Kidney problems: Kaiser Permanente advises telling your doctor if you have kidney problems, especially if contrast may be used.
- Feeling closed in: if tight spaces make you nervous, your doctor may prescribe a relaxing medicine. If you take it, arrange for someone to drive you home.
For a full checklist, see our MRI preparation guide.
Will I need contrast dye for a lumbar MRI?
Not always. Some spine MRI exams use contrast and others don't. When extra detail is needed, your doctor may order an injection of a gadolinium-based contrast agent through an IV in your arm. Kaiser Permanente says you may feel a brief coolness when it's injected, and RadiologyInfo.org notes that gadolinium is less likely to cause an allergic reaction than iodine contrast material.
If you're breastfeeding, Kaiser Permanente says you can choose to stop for up to 24 hours after the test and discard milk pumped during that time. For a deeper look at how doctors decide, read our guide to MRI with or without contrast.
Do I need an MRI for lower back pain right away?
Often, no. A review in American Family Physician cites the Choosing Wisely recommendation: "Do not perform imaging for low back pain in the first six weeks unless red flags are present." The same review describes early imaging as appropriate when there is concern for cauda equina syndrome, cancer, fracture or infection.
That's why many doctors start with conservative care, such as physical therapy, and order an MRI if symptoms don't improve. If back pain is affecting your daily life, a pain specialist can help you weigh next steps; you can search for one on PainDocNearMe.com. When an MRI is ordered, imaging centers in states like Texas and Florida are listed in our directory.
Frequently asked questions
Is a lumbar spine MRI painful?
No. The magnetic field and radio waves used in MRI don't cause pain. Some people feel sore or stiff from lying still for a long time, and a few notice mild warmth in the area being scanned.
Can I eat before a lower back MRI?
It depends on the facility. RadiologyInfo.org notes that guidelines about eating and drinking vary between imaging centers. Check the instructions you receive when you schedule, and keep taking your usual medications unless you're told otherwise.
How loud is a lumbar MRI?
The scanner makes tapping, thumping and snapping sounds while it takes images. Imaging centers may give you earplugs or headphones to reduce the noise. You'll also hear a fan and feel air moving inside the scanner.
What if I'm claustrophobic?
Tell your doctor before the appointment. Your doctor may prescribe a mild sedative or relaxing medicine to take before the exam. If you take one, plan for someone else to drive you home afterward.
When will I get my lumbar MRI results?
A radiologist reviews the images and sends a signed report to the doctor who ordered the scan. Your doctor then shares the results with you. Ask your doctor or the imaging center when you can expect to hear back.
Find an MRI near you
Ready to schedule your lower back MRI? Browse imaging centers by state and city in the MRIScanNearMe.com directory, and bring your doctor's order and insurance information when you call.
Sources: Kaiser Permanente – MRI of the Lumbar Spine: About This Test; RadiologyInfo.org (ACR/RSNA) – MRI of the Spine; Will JS, Bury DC, Miller JA. Mechanical Low Back Pain. American Family Physician. 2018;98(7):421-428.
This article is for educational purposes and is not medical advice. Talk with your doctor about which scan is right for you.