Ankylosing spondylitis CT
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
An option for more accurate (and much earlier) diagnosis of ankylosing spondylitis is tomography of the sacroiliac joints. Joint erosions, subchondral sclerosis, and bony ankylosis are better visualized on CT
CT
- May be useful in selected patients with normal or equivocal findings on sacroiliac joint radiographs
- Joint erosions, subchondral sclerosis, and bony ankylosis are better visualized on CT
- Some normal variants of the SI joints may mimic features of sacroiliitis
- CT supplements scintigraphy in evaluated areas of increased uptake
- Multidetector CT is superior to radiographs and MRI in demonstrating injuries
- MDCT is imaging modality of choice in patients with advanced ankylosing spondylitis for whom there is suspicion of cervical spine fracture.