A lumbar spine MRI (magnetic resonance imaging) uses a strong magnetic field and radio waves to produce detailed images of the lower spine. It is a non-invasive test that provides high-resolution pictures of the bones, soft tissues, spinal cord, and nerves in the lumbar (lower back) region.

Why is it Performed?

A lumbar spine MRI is used to diagnose various conditions, including:

• Persistent lower back pain or leg pain.
• Herniated discs.
• Spinal stenosis (narrowing of the spinal canal).
• Tumours, infections, or inflammation in the lumbar region.
• Injuries or trauma to the lower spine.
• Nerve compression causing numbness, tingling, or weakness in the legs.
• Congenital spinal defects.
• Conditions like multiple sclerosis or osteoporosis.

The test helps in planning treatments like surgery, physical therapy, or other interventions​

What are the benefits?

• Non-invasive and radiation-free: Unlike X-rays or CT scans, MRIs do not use radiation, making them safer for repeated use.
• High-resolution images: Provides detailed images of bones, discs, nerves, and soft tissues, aiding in precise diagnosis.
• Versatile diagnostics: Can detect subtle abnormalities like nerve root compression, inflammation, or tumours that may not be visible in other imaging techniques.
• Customizable imaging: Contrast-enhanced MRIs can highlight specific areas, improving diagnostic accuracy

What are the limitations?

• Limited access for metal implants: Some patients with pacemakers or metal implants may not be eligible for an MRI.
• Cost and availability: MRI scans are more expensive and may not be readily available in some locations.
• Lengthy procedure: Scans typically last 30–60 minutes, during which the patient must remain still.
• Motion sensitivity: Any movement during the scan can blur images, requiring retakes.
• Not ideal for bone details: While effective for soft tissue imaging, CT scans may be better for visualizing fine bone details

Source:

https://www.mountsinai.org/

https://expertmri.com/