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Why X-Rays for Ankylosing Spondylitis?
Plain X-rays are used to detect and monitor ankylosing spondylitis because they are effective and relatively inexpensive.
Plain X-rays are the best way to monitor if vertebrae are fusing together.
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Ankylosing Spondylitis Terminology
Technically speaking, diagnosing AS requires radiographic sacroiliitis being visible on a conventional X-ray.
During the early stages of AS, plain X-rays won’t show visible signs of the disease.
This is a significant disadvantage of only using conventional radiography when the disease is in its early stages.
X-ray technologists use the smallest amount of radiation required to get a clear image.
In general, the pros of using X-rays to monitor and diagnose AS outweigh the cons.
What to Expect
X-rays are a routine outpatient procedure requiring minimal preparation.
Typically, no fasting or other dietary changes are needed before getting an X-ray.
Sometimes,X-ray contrast dyeis administered to accentuate a specific body part and make radiographic images more clearly defined.
If a contrast agent is used, dietary restrictions may be necessary.
All metal objects, such as jewelry or watches, should be removed before an X-ray.
You’ll also be asked if you have any implanted medical devices.
Most likely, you’ll wear a hospital gown during the X-ray.
What Other Ways Is AS Diagnosed?
There aren’t specific lab tests that can automatically diagnose AS.
Accurately diagnosing AS at various stages of the disease requires taking a multipronged approach.
In addition to conventional X-rays, rheumatologists also use MRI and CT scans.
Ultimately, though, AS is diagnosed through imaging.
Medications for AS also can alleviate your pain and slow disease progression.
MRI plays a vital role in the early diagnosis and monitoring of ankylosing spondylitis.
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