Patients often arrive holding a scan report full of intimidating words. This guide explains what each imaging type does well, what it misses, and why the report alone is never the full story.
X-ray
X-rays show bones and alignment: fractures, spinal curvature, vertebral slippage and the spacing between vertebrae. They are quick and involve a small radiation dose, but they do not show discs, nerves or soft tissue in any detail.
MRI (magnetic resonance imaging)
MRI is the most detailed look at the soft structures: discs, nerves, the spinal cord and ligaments. It uses no radiation. It is the study of choice when nerve compression is suspected.
Its main limitation is over-detection: MRI reliably shows age-related changes that are common in people without pain. Words like "degeneration", "bulge" or "desiccation" on a report are frequently normal findings for age.
CT (computed tomography)
CT gives detailed images of bone structure and is valuable after trauma, for surgical planning, or when MRI is not possible. It involves a higher radiation dose than plain X-ray, so it is used purposefully.
Why the examination matters more than the report
Treatment decisions are made by matching three things: your story, your physical examination, and the imaging. When all three point the same way, the diagnosis is solid. A finding on a scan that does not match your symptoms is usually an incidental finding — not a reason for treatment, and never a reason for surgery by itself.
This article is general education. It is not a diagnosis and does not replace a consultation with a qualified physician.
Questions about your own case?
A consultation looks at your specific condition, history and imaging — not general information.
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