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Understand Your Lumbar MRI

If you've had an MRI of your lower back, the images can look confusing. This interactive cross-section lets you click each structure to see what it is — in plain language — and how it relates to common spine problems.

Medically reviewed by Jonathan G. Hobbs, M.D. · Updated June 2026
Interactive — click a structure

Axial MRI — Level L4–L5

A view looking straight down through a slice of the lower spine.

Axial (cross-section) MRI of the lumbar spine at the L4-L5 disc level

Example educational MRI for learning — not your personal scan. Tap the glowing markers or the list to explore.

Structures in this view

How to Read the View

Front & back

The belly side (anterior) is at the top; your back (posterior) is at the bottom.

Left & right are flipped

As is standard in radiology, the patient's right is on the left of the image.

Bright vs. dark

On this T2 sequence, spinal fluid is bright white; bone and ligaments are dark.

Want your own MRI explained?

Dr. Hobbs will review your actual images with you and explain exactly what they show.

(219) 250-5010

Educational use only. This page uses a normal example MRI to explain spinal anatomy in general terms. It is not medical advice, not a diagnosis, and not a substitute for review of your own imaging by a qualified physician. Many MRI findings are normal age-related changes. If you have questions about your spine, please consult Dr. Hobbs or your physician.

Frequently Asked Questions

An axial MRI is a cross-sectional view — like looking down through a slice of the spine from above. It shows the disc, the spinal canal and its nerves, the facet joints, the ligaments, and the surrounding muscles all in one image, which is why it is so useful for diagnosing problems like a herniated disc or spinal stenosis.
No. The image on this page is a normal example MRI used for education only. It is not your personal scan. Dr. Hobbs reviews your own imaging with you during your consultation and explains what it shows for your specific situation.
Only a qualified physician can interpret your MRI in the context of your symptoms and examination. Many findings on an MRI are normal age-related changes and do not require treatment. Jonathan G. Hobbs, M.D., a board-certified neurosurgeon, reviews your imaging and symptoms together to determine what, if anything, is causing your pain.