Ankylosing spondylitis MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

MRI

• May have a role in early diagnosis of sacroiliitis
• Synovial enhancement on MR correlates with disease activity measured by inflammatory mediators
• Superior to CT in detection of cartilage, bone erosions, and subchondral bone changes
• Increased T2 signal correlates with edema or vascularized fibrous tissue
• Useful in following treatment results in patients with active ankylosing spondylitis

(Images courtesy of RadsWiki)

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  AS with dural ectasia
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  AS with dural ectasia

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  Bamboo Spine

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  Symmetrical sacroiliac joint fusion
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  Symmetrical sacroiliac joint fusion