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A lumbar MRI is a noninvasive procedure that doctors use to help diagnose lower back pain, plan back surgery, or monitor progressive medical conditions, such as multiple sclerosis.
First, I will go over the pertinent lumbar anatomical structures as visualized on both sagittal (view from the side) and axial (view from underneath) MRI imaging, and then we will go over the typical presentations of some of the common pain-causing spine conditions.
If your doctor has recommended an MRI of your lumbar spine, you might be wondering what this imaging test shows. To help you prepare, here is a look at the details behind an MRI of the lumbar region, as well as a brief description of what you can see and why doctors order MRIs for this location.
Anatomy of the lumbar vertebrae (cross-sectional imaging on T1, T2 and 3D MR) Figure 1 - Lumbar spine anatomy on MRI (Magnetic Resonance Imaging) Figure 2 - Anatomy of the lumbar spine using cross-sectional imaging (MR T1 and T2 weighted; sagittal, coronal and transverse slices)
Identify the type of MRI used in each image. At a minimum, you'll have a sagittal lumbar MRI, which is a vertical image that looks at your spine from the side. You may also have axial images, which look at a cross-section of an individual disc.
A lumbar MRI scan uses magnets and radio waves to capture images inside your lower spine without making a surgical incision.
An MRI of the lumbar spine is usually conducted with the patient in the supine position. A prone position can be considered in selected cases such as tethered cord syndrome. Technical parameters. Coil. posterior coil. anterior coil. Scan geometry. in-plane spatial resolution: ≤0.7 x 0.7 mm.
What Is a Lumbar Spine MRI? Magnetic resonance imaging (MRI) uses radio waves and a powerful magnetic field to create detailed images of the body’s soft tissues, organs, muscles and structures. A lumbar spine MRI focuses on the lower part of the spinal column, specifically: The five lumbar vertebrae from L1 to L5; Coccyx (tailbone)
Lumbar Spine MRI. Image courtesy of Intermountain Medical Imaging, Boise, Idaho. All rights reserved. A side view of the lumbar spine shows normal discs, spinal canal, and nerve roots (see figure 1). Nerve roots normally float in the fluid-filled canal.
This MRI Lumbar Spine axial cross-sectional anatomy tool is absolutely free to use. Use the mouse scroll wheel to move the images up and down, or alternatively, use the tiny arrows (→) on both sides of the image to navigate through the images.