Ankylosing spondylitis MRI

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

Overview

The main MRI finding for a patient with ankylosing spondylitis is synovial enhancement. MRI is superior to CT in the detection of cartilage, bone erosions, and subchondral bone changes. An increased T2 signal correlates with edema or vascularized fibrous tissue.

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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